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UEFI USB Disk - Does not boot from UEFI Windows 8.

Q: UEFI USB Disk - Does not boot from UEFI Windows 8.

Dear Friends,

Long time reader of this forum but a first time poster, so please forgive me if this question has already been asked and answered.

Laptop: ASUS UX31A-DB71, latest BIOS: 218

Originally my laptop came with Windows 7 and when i looked at disk management my disks were formatted with UEFI schema. One of my friend gave me a UEFI bootable USB drive loaded with Windows 8. So, i thought why not give it a try. So, I created a backup of my OEM Windows 7 and saved the iso files in a seperate external HD (created twice just to be sure . Now, i decided to load the Windows 8. Booted into the BIOS and there is an option to select the USB drive along with the UEFI option for that USB drive. I selected the UEFI option but some reason it does not boot into UEFI. So i decided to select the standard USB install and this option let me install windows 8. In the process of installing i formatted the partitions and made a single partition and installed Windows 8 on it. I am guessing now the drive is not GPT but MBR. I also noticed that his installation USB disk had an option to select either 32bit or 64bit of Windows 8...I find this kind of odd. Would Microsoft create a same iso file with both versions? I am guessing he created the USB from a illegitimate source.
I am planning on purchasing Windows 8 Pro version as an iso but wanted to be confident that it would work with UEFI architecture.

1. Why would the system NOT boot from UEFI?
2. If I download the legitimate iso from Microsoft and wanted to install Window8 Pro via UEFI, I am sure i would have to format my SSD to GPT and how would i go about formatting it during installation?
3. How would i create a recoverable USB for my iso image i created for Windows 7 via ASUS AI Recovery. Do I need to follow the same procedure as stated in creating bootable USB disk (i.e. FAT32 system) via diskpart utility?

I know there are a lot of questions but would like to get your feedback before i can move to a next step.


Preferred Solution: UEFI USB Disk - Does not boot from UEFI Windows 8.

I recommend downloading and running DAP. It can help sort out any driver and firmware related issues on your system

It's worked out well for many of us in the past.

You can download it direct from this link http://downloaddap.org. (This link will open the download page of DAP so you can save a copy to your computer.)

A: UEFI USB Disk - Does not boot from UEFI Windows 8.

Welcome. Begin with Clean Install - Windows 8. See the UEFI links in the tutorial: How to Install Windows 8 Using "Unified Extensible Firmware Interface" (UEFI). You also will want to see this tutorial link: How to Do a Clean Install with Windows 8 Upgrade.

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Hello everyone
I am trying to make Windows 10 scripted installation with UEFI boot.
Every things works with normal Legacy mode in our environment and k2000.
I have made WINPE 10 boot file as a normal procedure with k2000 Media Manager (like in legacy mode). And uploaded it to k2000. Of cause I have re-cached my drivers when making new a boot source. 
I have setup our new DHCP so it can boot with UEFI and it works!, and I can see my boot sources when boot up the client in UEFI mode. 
Here comes the tricky part I can choose my newly created Windows 10 boot source with Dell's own WINPE10 drivers. Then it loads the Boot source file that I created but It stop at the Windows 10 logo it never loads the deployment menu like in legacy mode, so I cannot deploy a scripted installation.
I am stuck what could be wrong or what have I missed ? Please help


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I have a Dell XPS 8700 that failed Windows 10 anniversary update until UEFI secure boot was turned off. It apparently then completed but I cannot re-enable secure boot without the same boot problem advising
Recoveryyour pc/device needs to be repaired / during Windows 10 anniversary updateAn unexpected error has occurredError Code 0xc0000185you'll need to use recovery tools.   Is there a solution to enable UEFI secure boot ?
 I am using a Dell XPS 8700 pc with an SSD drive. The Windows 10 update was installingthen after one of the reboots the error above  The pc was running prior to the update and had UEFI OS , secure boot enabled,  no prior problems.I attempted to do any of the safe mode boots but none would proceed.Disabling the UEFI safe/secure boot mode apparently let the install continue and the das it did before with I believe completion of the installation of Windows 10 anniversary update.PC now shows Windows 10 home Ver 1607 ..
The problem returns if I enable UEFI secure boot and the PC stops. I would like to determine a wayto locate the problem or issue. related to the secure boot.  Using the media creation tool may justrepeat the problem once secure boot is re-enabled.
 Dell lists that they have tested XPS 8700 with this update and have not indicated problems no mention of secure boot issue.

A:XPS 8700 needed UEFI secure boot disabled to complete Windows 10 anniversary update can't enable UEFI secure boot now

If your computer was running WIndows 10 without any issues prior to downloading the Anniversary update, then you would not have had to change any settings in the bios to install the update.The UEFI and Secure Boot settings are to enable booting with a USB or DVD to install Windows.
Disable Legacy Boot Mode and Enable UEFI
Start the computer and TAP the F2 key to enter the bios. Once in the bios Press F9 to Restore the bios to the Default Settings. F10 to save changes and exit. You could have a hardware problem. To run a hardare diagnostics on the computer you would start the computer and TAP the F5 key. Insert a cd/dvd in the optical drive for running the diags.

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I have a Dell XPS 8700 that failed Windows 10 anniversary update until UEFI secure boot was turned off. It apparently then completed but I cannot re-enable secure boot without the same boot problem advising
Recoveryyour pc/device needs to be repaired / during Windows 10 anniversary updateAn unexpected error has occurredError Code 0xc0000185you'll need to use recovery tools.   Is there a solution to enable UEFI secure boot ?
 I am using a Dell XPS 8700 pc with an SSD drive. The Windows 10 update was installingthen after one of the reboots the error above  The pc was running prior to the update and had UEFI OS , secure boot enabled,  no prior problems.I attempted to do any of the safe mode boots but none would proceed.Disabling the UEFI safe/secure boot mode apparently let the install continue and the das it did before with I believe completion of the installation of Windows 10 anniversary update.PC now shows Windows 10 home Ver 1607 ..
The problem returns if I enable UEFI secure boot and the PC stops. I would like to determine a wayto locate the problem or issue. related to the secure boot.  Using the media creation tool may justrepeat the problem once secure boot is re-enabled.
 Dell lists that they have tested XPS 8700 with this update and have not indicated problems no mention of secure boot issue.

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Hello, I have a Y720 tha comes with a 1x 129 GB M2 SSD and x1 HDD, in UEFI mode. I'm currently trying to replace the M2 SSD with a newly bougth Samsung 960 EVO M2 where I would like to install Windows 10 also in UEFI mode, as it has better power management than Legacy. But I have tried booting the Windows 10 installer USB stick and the laptop does not recognize in bios. I have created the usb stick with RUFUS 2.18 (latest), choosing UEFI + GPT and Fat32 file format. Before that I also tried restoring a system backup image I created from the former M2 using AOMEI Backupper but I couldn't boot the USB utility to do so either (the same happened: Bios does not recognise it, despite creating it choosing UEFI mode) Things I have tried: 1. Disabling secure boot (although the Secure Boot Status staed "Enabled", so I used the "REset Secure Boot mode" option too...)2. Chaging Optimal OS Setting to disabled in seetings, but still no use3. Using the Novo Button on the right part of the laptop. Of course, changing boot mode to Legacy would allow me to install Windows from USB ....but in Legacy mode, which I'm trying to avo So ...is there a way to boot a UEFI usb stick to install Windows in UEFI mode from it?  thanks!

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**** This issue has been resolved ****
**** Look at Page 4, posts 4 and 5 ****
**** You need to enable Legacy MBR by Enabling Launch CSM in the EFI Setup ****

Hello all,

This is my first post. I am a Windows 7 user and now (against my will) Windows 8.

I bought an ASUS N76 laptop pre-loaded with Windows 8 so these are the new generation n76 series. The old ones come with Windows 7. Anyway...

I attempted to boot a Windows 7 ULT 64 install DVD but the install hangs on the Windows logo/flag. So...

- Windows is loading files is shown and hidden
- The animated Windows logo appears and then it just hangs....go figure

I have no idea what is going wrong. I went into the UEFI setup and the only option for my BR is EUFI boot.

I also added a "boot option" asking the EFI to boot "efi\microsoft\boot\boot.efi" or "\efi\microsoft\boot\boot.efi" but when selected (from Boot Override), the screen goes blank for a few seconds, the BR starts spinning and I am thrown back at the EFI so it looks like it cannot find the file. For path, I selected the BR device and at the end has a "\".

I have secure boot disabled. (yep, I have an option for that). So now I am left empty handed and I am stuck with Windows 8. I even put in a brand new SSD hoping I would install W7 on it but I can't even start the setup!! Argh....

I am very experienced with MBR and BIOS but I am a complete newbie to UEFI. I don't know what is going wrong and why the setup hangs....Ther... Read more

A:Asus N76 UEFI - W7 64 Install Hangs on Logo (DVD UEFI Boot)

Win8 PC's have Secure BIOS which must be disabled to install any other oS, then you can install in UEFI mode following these steps: Downgrade Windows 8 to Windows 7

If you want to bypass UEFI and install normally to an MBR drive the procedure is related here: MS new "Secure Boot" locked BIOS arrives

Other info on EFI:
Technical Note: UEFI BIOS vs. Legacy BIOS - YouTube
The 30-year-long Reign of BIOS is Over: Why UEFI W... - Input Output

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Trying to understand handshaking between UEFI & Win 7. Have Win7 Pro sp1 64 installed on SSD, mb=Asus F2A85-V Pro. Example: boot to flashdrive to do Acronis backup of SSD; remove SDD, insert spinner; boot again to flashdrive to do Acronis restore to spinner (to test backup); remove flashdrive, boot to UEFI, set UEFI spinner as default, save & reset; spinner starts boot (#1), Win logo shows briefly, reboots (#2) and shows Win repair/normal screen; choose normal; Windows desktop shows; new driver is loaded for spinner and asks for reboot (that part I understand); reboot (#3) starts and again briefly shows Win logo before yet again rebooting (#4) to the Win repair/normal screen; again choose normal & all is happy. But then I remove the spinner, insert the SSD, and have to go through the whole deal again. Why so many reboots?

Similarly, if I change any hd/flashdrive configuration, my UEFI boot selection is lost & I have to reset it again - sometimes with the multiple reboot scenerio, sometimes not. Sure wish I could force that the UEFI selection stay there as long as the selected drive is installed.

A:UEFI boot keeps changing; UEFI/Win7 handshaking confusion

Hello and welcome diana look I am having a little difficulty in following the train of the thread.

Now do you mean you just backed up the SSD to a USB stick ? then tried to transfer that USB stick back up to the spinner? If it was just a back up then I don't think it is going to work because it is only a backup.

To make the spinner the boot device I would be cloning the SSD to the spinner. I wouldn't mucking around with sticks as I cannot see why that is necessary.

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What is UEFI Boot Source means and why some people disable this feature?


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Hi all,

Currently having a wake on lan issue with a certain computer.

The machine is setup correctly but the windows boot information is stored in a 100mb UEFI partition, and when the computer wakes on lan, it will not boot windows, just sit at a blank screen.

When it wakes on lan it is trying to boot from the legacy device (same blank screen happens if you choose to boot from it from bios)

ive tried updating the bios but no luck, all settings seem to be as they should be.

Is there some trick to get it to load the UEFI MBR, or is there a safe way other then reformatting the machine to move the MBR over to the legacy device itself?

Thanks for any help.

A:Boot UEFI from wake on lan, or convert UEFI MBR to legacy.

Back up your files, unplug all other HD's and peripherals,

Boot into BIOS setup to enable Legacy BIOS. Next check BIOS Boot order for an EFI Boot Disk: remove it, set DVD drive first to boot, HD second. Then set SATA controller to AHCI. Save changes and Exit.

Then boot into installer DVD or flash stick burned or written using tool and latest ISO for your licensed here.

At first installer screen Press Shift + F10 to open a Command Box, type:

SEL DIS 0 (after confirming Windows 7 target HD #)
CREATE PARTITION PRIMARY SIZE=102400 (for 100gb partition, adjust as desired)

Next click Install Now to Clean Install Windows 7 to the partition you created. If it fails then report back at which step and the verbatim error message.

In addition read over these steps to understand the tools and methods which work best to get and maintain a perfect Clean Reinstall - Factory OEM Windows 7. The steps are the same for retail.

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Hello to the forum. Thanks for the welcome. And thanks for pointing me in this subforum.

I have a notebook toshiba satellite L850-1HU with UEFI

Default is win 8 os, recently upgraded to 8.1.

Now I need to win 7.

I have a professional license N sp1 x64 and then supports UEFI

Is possible to combine the systems in dual boot and both in UEFI mode?

I see from your guides that for installation the UEFI is necessary partition in a certain way.
What should I do if I want to leave intact the UEFI partition of win 8 (5 partition)? I just make only space for win7(1 partition) that will use the same 4 partition UEFI of win 8 or i make other 5 partition???
And which of the two systems will handle the boot? I can decide I?

and the warranty? restores factory work?

If I change hdd, and install win 7, when I put the old hdd, it works as before removing it?

Sorry for the confusion! I hope you manage to understand me and help!

Ciao forum! E grazie! Saluti dall'Italia!

A:Satellite L850 & Win 8 UEFi: How dual boot UEFI win 7 ?

If I change hdd, and install win 7, when I put the old hdd, it works as before removing it?

Yes. This is how I do any OS tests\'dual boot'\experiments etc with zero chance of damage to the original boot OS\hd. Am keeping a bunch of old HD's for the purpose. The downside is the slight risk for some mechanic\connection problems, just be careful, remember to power down! So if you don't find it troublesome to switch HD's, IMO go ahead and try that route.

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I am in the process of doing a number of clean installs. I am trying to make a decision as to whether or not to utilize the UEFI and Secure Boot modes which are available on the MBs.

It seems from an initial attempt, that I cannot simply use UEFI/GPT without turning on Secure Boot...that is one must NOT use CSM (turn it off) and USE Secure Boot. You cannot use UEFI without Secure Boot.

Is this correct? I am considering us9ng UEFI without Secure Boot because I hear it is faster.

However, I am concerned that I will run into all sorts of trouble turning Secure Boot on with respect to double booting Win 10...and additionally with creating images with Acronis.

I have been in the habit of creating a new PC with an extra drive with a cloned OS...then disconnecting the drive so that if the first OS drive fails, the person can boot up quickly with the other drive. I am concerned that there will be a problem with Secure Boot.

I mean, how many times have I been infected with a root kit.....some virus that take over at boot time...Answer...never since I started with PCs in 1991!

So, anyone really think Secure Boot is worth it?

A:UEFI/Secure Boot or not to UEFI/SB, that is the question..

Originally Posted by Andrew124C41

I am considering using UEFI without Secure Boot because I hear it is faster.

Secure Boot does not affect the speed of your computer.

Originally Posted by Andrew124C41

However, I am concerned that I will run into all sorts of trouble turning Secure Boot on with respect to double booting Win 10...and additionally with creating images with Acronis.

Windows 8/8.1/10 are compatible with the Secure Boot.

I don't know about Acronis True Image but Macrium Reflect is compatible with the Secure Boot.

Originally Posted by Andrew124C41

So, anyone really think Secure Boot is worth it?

It is a very important security feature.

Microsoft designed Secure Boot to protect the computer from low-level exploits and rootkits and bootloaders. A security process shared between the operating system and Unified Extensible Firmware Interface (UEFI, replacing the BIOS), Secure Boot requires all the applications that are running during the booting process to be pre-signed with valid digital certificates. This way, the system knows all the files being loaded before Windows 8 loads and gets to the login screen have not been tampered with.

If a bootloader has infected your computer and it tries to load during the boot-up sequence, Secure Boot will be able to undo all the changes and thwart the ... Read more

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I am not sure if this subforum is the right place, if not, pleases help me transfer to the right forum...

I recently just build a new setup with Asus P8Z77-V LK, this motherboard comes with UEFI boot and legacy BIOS boot support.

So I tested install windows 7 in both mode, and I didn't find any advantage of UEFI consider it is a new technology been promoted quite a lot for recent years.

The benefit I found is: a graphic BIOS setup, which is useless to most users if you don't OC. Even you did, I still find using keyboard to navigate through the menu is much easier than mouse.

Faster boot time? very negligible, could be 31 seconds compare to 28 seconds. As I timed use my stopwatch, the value could include a few seconds human error as well.

Support boot from > 2.2TB HDD? nowadays most user use SSD as boot drive so this really doesn't matter.

GPT disk partition? don't see any benefit here compare to legacy MBR...

Anyone can enlighten me what is the advantage of UEFI here?

Thanks a lot!

A:What's the benefit of UEFI and install Windows in UEFI mode?

Thanks for adding information about EFI BIOS which present a problem for many during installation and repairs.

For this reason alone, I would advise disabling EFI BIOS in BIOS boot order or choosing Legacy BIOS in BIOS setup, installing normally to an MBR disk.

Wiping a HD already formatted as GPT disk with Diskpart Clean Command can clear the way for it to install as MBR. Sometimes it also takes runnning the command "Convert MBR" to change disk from GPT.

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Hello, i have HP Pavilion g6 1360su with Insyde H2O F.6A. I have downloaded and installed the HP UEFI Support Environment from here: http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=ob-119351-1&cc=bg&dlc=bg&lc=en...=. Is my PC compatible with Windows 8 UEFI?

A:Is my PC UEFI Compatible and how to install Windows 8 UEFI

Please help me. The tool has created a new partition called HP_TOOLS. It's ok but how to do a clean install without deleting it. What should I do?

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Hi folks. After searching in these forums and some more on the web results in no useful answers, I would like to pot my problemhere: M System is a ThinkCentre M93PBIOS ist currentHarddisk to use is a WD30Installing Windows from USB Stick Now... to be able to use the whole 3 TB I have to enable UEFI - thats fine, in Windows Setup I see a total of 3 TB.But... the actual start of the setup and every step and klicks hangs up to the point of a complete freeze. It's not the disk. I have tried others.When I use a Disk <= 2TB everything works fine I can't see,where to go from here or what else to try... Any ideas? thx.

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The short answer to the headline?s question is that a UEFI scanner is all about helping you protect your computer against people who seek to take it over by abusing its Unified Extensible Firmware Interface (UEFI). A successful attack on a system?s UEFI can give the attacker complete control of that system, including persistence: the ability to secretly maintain unauthorized access to the machine despite rebooting and/or reformatting of the hard drive.

As you can imagine, this form of persistence is not a virtue and can prolong the pain and inconvenience of a malicious code infection. If your security software only scan drives and memory, without scanning UEFI, it is possible to think you have a clean machine when you don?t, that?s why we recommend a security solution that scans it, like ESET.

Why does my device have a UEFI?

Computing devices work by executing code: the instructions that we call software and which make the hardware ? such as a laptop or smartphone ? do something useful. Code can be fed to the device in several ways. For example, it can be read from storage on a disk, held in memory, or delivered via a network connection. But when you power on a digital device it has to start somewhere (bootstrap), and that first piece of code is typically stored in a chip on the device. This code, referred to as firmware, may include a ?power-on self-test? or POST to make sure things are working correctly, followed by the loading into memory of the basic in... Read more

A:Fighting persistent malware with a UEFI scanner, or ‘What’s it all about UEFI?”

Isn't it the same as Avast's Boot time scan?
Edit: No it's not

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I need to change some setting in my UEFI/BIOS but it is stuck in ready only mode.
All options are blanked out except for "exit". How can I get it to let me edit the settings again?

A:Cannot change UEFI settings / UEFI stuck in read only mode

You may have to disable the "Secure Boot" option first.

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Windows 10 Pro
GA-X79-UD5 rev 1.0
40GB DDR3 Quad
512 SSD
GTX 1060

Upgraded Video Card from GTX 560 Ti to GTX 1060 Strix, machine boots but no video output or just black/blank screen.

Did a bit of online research and realize that two ways of fixing this
1. Change PCI setting to Legacy in BIOS/UEFI
2. Update to latest BIOS.

I decided to try and update BIOS to latest BETA (13w) using @bios from Windows. Everything went ok, reboots fine and still does now with Windows loading no problem, BUT i can't get to BIOS/UEFI???

All i get is the UEFI empty blue screen, no menus/options, just blank screen...

So i thought maybe i can reverse back to previous BIOS from windows but program wouldn't allow this. I tried sticking BIOS file in USB but the problem is i can't get to BIOS.

I Have tried running backup BIOS as board has two, but still same problem.

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A year later, and I discover again that I STILL cannot boot from a non-UEFI CD on my UEFI Win 7 Pro SP1 64-bit Dell Optiplex 7010 MT even though "Enable Legacy ROMs" is ENABLED in the BIOS and Secure Boot is OFF.

My original details are here - Cannot boot from CD-DVD in LEGACY mode - NOT Secure Boot NOT UEFI - General Hardware - Desktop - Dell Community

That thread from a year ago describes the issue but then goes off on a tangent into my (successful) experience in establishing dual-booting, but THIS ISSUE remains. My Dell Optiplex 7010 MT (which is now dual-booting Win 7 Pro SP1 64-bit and Win 10 Pro 64-bit) will NOT BOOT a legacy CD that is not UEFI even though "Enable Legacy ROMs" is CHECKED in the BIOS and Secure Boot is OFF. (My BIOS is A20.)

What is the fix??

Please reply here, not in my old Dell thread above. Thanks.

A:STILL cannot boot a non-UEFI CD on my UEFI Win 7 64-bit - any fix ??

Update - I have now made TWO bootable CDs of Macrium Reflect. These two CDs show the problem.

First, in my old Dell Optiplex 755 Win XP Pro SP3 32-bit machine, I installed Macrium Reflect Free and made a bootable CD with the included Win PE. I assume it will boot in my XP machine. However, that CD will NOT boot in my other PC, which is my Dell Optiplex 7010 MT that dual-boots Win 7 Pro SP1 64-bit and Win 10 Pro 64-bit, even though the BIOS in this Dell Optiplex 7010 MT ENABLES Legacy ROMs.

Second, in that other PC (my Dell Optiplex 7010 MT that dual-boots Win 7 Pro SP1 64-bit and Win 10 Pro 64-bit), I again installed Macrium Reflect Free (with 64-bit architecture) and made a new bootable CD (with the lowest level of Win PE, which is 3.1), and that CD WILL boot in that second machine.

Why are we being tortured this way? I have other bootable CDs from my XP days - is there any way to get them to boot in the second (Win 7 Pro 64-bit) PC?


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A few months ago I purchased a new Lenovo ThinkCentre M73 Small Form Factor desktop computer. It has Windows 7 Professional preinstalled.  I am thinking of updating to Windows 10. My M73 has a regular BIOS.  Can it be changed to UEFI, and would there be an advantage in doing so?Also, I am planning to install an SSD and move the OS to the SSD and use the HDD for extra storage. I think this would be a significant improvement to the system speed and faster boot up.  I have done it on older desktops I own.Thank you in advance to anyone with good advice.

A:M73 ThinkCentre: Can BIOS be changed to UEFI, and is there an advantage to UEFI?

M73 SFF (&Tower) does have a UEFI setting, it is not the default (compatibility mode).   I changed it to UEFI to boot a MemTest86 CD to run the latest v6 tests:  What's New in MemTest86 for the UEFI platform (Version 5 and later)? 
This describes the differences well:   differences-between-uefi-and-bios

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Hi guys,Just got an Aspire ES1-523. Was setting up for dual boot of Win10 and Linux Mint 18. Shrunk Win 10 partition from within windows to make room for Linux partitions. Got system to boot from UEFI USB and used gparted from Linux Mint Live to make and format new partitions, then installed Mint using new partitions for"/" and "swap".All seemed fine until reboot... Now boots to UEFI setup and exit from UEFI setup goes to boot and boots UEFI setup. I'm locked in a bit of a loop...How can I get the boot loader to point to Win 10 boot manager or grub2 boot manager instead of UEFI (bios) setup???

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Hello All,
I deployed the Media to a UEFI hardware device using MDT LTI OEM Task Sequence.
I have below partition created by MDT
499 MB ( EFI)
128 MB (MSR)
Rest 100% ( OS partition)
I captued the EFI partition and OS Partition in a wim file .
Now i take a new UEFI machine and create the partition manually and apply the wim on respective partition

Now when i turn on the machine it is unable to find the boot files .
SO my question is what are the steps to be taken care after applying the wim on a UEFI machine
am i missing some steps ?

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I have 3 hard disks . Windows 7 and Linux Mint is installed in 2 separate disks.

The problem started when a black screen with only mouse pointer started irritating me at boot. On shaking the mouse or After waiting for a few seconds however my windows would boot up .I ran sfc /scannow and found some corrupted files could not be repaired. I booted Installation media and ran startup repair which corrupted my BCD store. Now whenever I boot I get a PC recovery screen saying BCD is either missing or not bootable.

Now when I boot install media of Win 7 (UEFI mode)- USB , my Windows disk is not displayed in the box where it shows the current installation . Also The Fat 32 EFI boot folder (500 MB) is in Disk 2 and not in Win Hard drive.

I tried Hiren boot CD but the mini xp environment could not be booted as the video driver seems to be incompatible and only lines are appearing.

Since it is UEFI mode , pressing F8 at the time of Windows boot to log into safe mode is not working as on selection of Windows option immediately the error screen throws up.

is there any other utility I can run from a USB/DVD to repair the win partition? or can Mint do something? Upon googling I came across a utility called Lazesoft but its a Limited use trial version and I dont want to go with it .

Can I use Ultimate Boot CD (UBCD) on EFI?.

I am also hesitant to use MBR fix tools as I fear they may not work with UEFI firmware.

A:Unable to repair BCD in Windows 7 (UEFI) thru Install disk

Why is your EFI System partition not on the same hard drive as Win7? You must have known this is not correct so why did you allow it to continue?

To repair the Win7 hard drive you need to unplug all other hard drives, but if you have the EFI partition on a separate hard drive then you need to include it.

See if you can rebuild the BCD from Step 5 of Troubleshooting Windows 7 Failure to Start.

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Hi everyone
Some people might like to test the possibilities of UEFI systems even though their current machines aren't equipped with it.

It IS possible to do this in a Virtual machine even if the HOST system is a non UEFI machine.

Edit Manually the VM configuration for the VM you want to test this feature with.

Add the following like to the .VMX (machine configuration file)
firmware = ?efi?

Note that you must do this BEFORE installing the VM and you can't change it afterwards.


A:Testing UEFI on a non UEFI system - Can be done in VMWARE

Thanks for the reminder Jimbo.

I had this posted a while back, works even on Player:
VMware Player with UEFI

Works like a charm.

There were no post reactions back there but I guess those who need this can easily and silently test it out.

You've mentioned it:

Note that you must do this BEFORE installing the VM and you can't change it afterwards.

Very important indeed because we know how easy it is to change settings on the go; unfortunately this settings aren't meant to be changed afterwards.


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The problem is a freeze during Windows 7 64 bit installation loading disk.sys when booting in UEFI mode.

According to Intel online support (https://communities.intel.com/message/206067) :
+"Windows 7 Setup has a problem detecting Toshiba SSD"+

*Disk Drive ATA TOSHIBA THNSNH25 SCSI Disk Device (238 GB)*

Is there anything to do that would make Windows 7 setup loader work with the SSD drive ?

A:Windows 7 freeze after UEFI boot because of SSD

I read the discussion on the Intel community page.
It looks like you already tried all possible solutions to install Win 7.
It looks like Win 8 can be installed properly but only Win 7 isn?t possible.
Not quite sure why this isn?t possible but in case its SSD drive issue, you should try another SSD drive.
Maybe its a compatibility problem between the controller and SSD drive.

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I have my laptop since last december (less than a year), and for unknown reasons, I got a BSOD a few weeks ago and none of the available recovery tools managed to bring me back to my desktop; not even a refresh. That's when I promised myself that I would never ever again install a Microsoft OS, and went for Ubuntu 16.04 (which was already there on another partition). Now I'm realizing that I need some softwares that work best on Windows and not through a VM (eventhough I already have Windows 10 running in VM for Microsoft Office).

So here's my issue:

I created my bootable Windows 10 installation USB but I can't boot from it! I doesn't even show as an option. Ubuntu does. I tried a USB 3.0, 2.0, UEFI, Legacy, MBR, GPT... Nothing seems to work. Searched forums for hours and couldn't find a solution.

Now for grub to be able to launch at startup, I had to add an efi file to the trusted uefi file list in the BIOS. I was wondering if such a file should be added to be able to boot from my USB... (secure boot is disabled).

I want to keep my Ubuntu and Kali...

I've attached a screenshot of my ssd partitions.

Any idea?

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Hello everyone...
I have a request, I am using Windows 8.1, now I have a problem because i wanted do dual boot it with ubuntu and it didnt work on UEFI mode, but then when I installed ubuntu windows 8 wouldn't start... then I formated it with a downloaded windows 8 torrent... but now I can't start it on UEFI mode

it says somethind "media not found" or "faild" ...
so if I want to start it I have to change to legacy mode......

Is there anyway to get it back to start it with UEFI??? Please HELPPP
It aint activated yet.. windows 8.1 pro... is there any activatior or something too???

Or if I downgrade it to Windows 7? would it be any more the UEFI problem???

sorry for english... thanks

A:Please HELP!! Windows 8 UEFI boot !!! HELPP

Try disabling Secure Boot in BIOS. A windows 8 torrent? That doesn't sound good.

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I have very little experience with Windows 8 until now. I am having an issue trying to run System Refresh or System Restore from the System Recovery Environment booted from the Windows disc. When I try to run it from the disc I already System Refresh says that the drive is locked. I tried System Restore and it said no OS's were found. I went into the CMD prompt and went to c: and can see the drive just fine.

Steps tried:
running fixboot, fixmbr, rebuildbcd commands from CMDrunning dskchk /f (which forced a dismount)

I then read something about a non UEFI bootable disk couldn't access a GPT partition, which I think is the case here. So then I tried oscdimg to make my iso UEFI bootable (twice) and the UEFI Boot Manager still only shows 'Windows Boot Manager' at the boot menu. I even tried downloading an iso that was already UEFI incase I did it wrong and it still doesn't see it.

Not sure what I'm doing wrong here??

A:Trying to Understand UEFI and how to boot from Windows DVD

When you go to your BIOS boot options the DVD drive should be listed twice, once with UEFI in front of it and one entry with no UEFI in the description. Selecting the entry with UEFI in the description will boot from the DVD in UEFI mode. If the PC doesn't have UEFI or UEFI is disabled you won't see UEFI mentioned in the boot menu.

The screen shot in step 4 here, UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with will show what I mean.

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Hey all,

I just got a new HP ENVY dv7t-7200 CTO Quad that came pre-loaded with Windows 8. I wanted to install Windows 7 so I enabled "Legacy Support" in the BIOS which disabled UEFI mode. Everything went fine from there. I ultimately decided to go back to Windows 8.
I found this guide but could not get my Windows 8 installation that I have on disc to load on startup: UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with
I disabled "Legacy Support" in the BIOS so now UEFI mode is re-activated.
My UEFI Boot Order in the BIOS is:
USB Drive
OS Boot Manager

But when I have the disc in and restart windows, it does not read the Windows 8 installation from the disc. If I press F9 to change the Boot Order it only shows:
OS Boot Manager
Boot from EFI File

It should be noted that the it will recognize the disc if I'm not booting in UEFI mode.

I could install Windows 8 again without UEFI but I would really prefer it. Any suggestions?

A:UEFI cannot boot from USB or DVD to install Windows 8

Solved -I went to System Recovery while starting up by hitting F11, then used the option to restore the comp back to factory settings. It installed Windows 8 in UEFI Mode

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I have set up a dual UEFI boot with windows 7 and WDP every thing is working as it should be but I have one question about the Boot manager.

When I boot my system WDP boots automatically until it is just before the logon screen, at this point I get the Boot manager coming up with the choice of operating system. This is ok If I want to use WDP which is the primary system but it is annoying if I want to select Windows 7.

Selecting Windows 7 causes the system to reboot and start in Windows 7. This is even more annoying if I am using WDP and want to switch to Windows 7 as I have to reboot to the Boot screen and then reboot again to Windows 7.

Does anyone know if it is possible to make a change to the boot manager so that it comes up before WDP boots?
If I was to change to the Windows 7 boot manager would it work the same as WDP? (assuming the Windows 7 Boot manager will see WDP)

A:Windows boot manager under UEFI

Just run msconfig from within windows 7 and set win 7 as default.

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Hello, I bought a 3TB harddisk and I can only use 2TB of it
I read some forum and it said I have to install windows by uefi boot
And change format from mgb to gpt so I can use 3TB

My motherboard is Asrock H81M

I want to know how can I use uefi boot, I am total idiot in computer, thanks for help

A:How to use UEFI boot to install windows 7?

Is Windows installed on this 3TB HDD or is it being used purely as a storage drive?

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Is there currently any way to configure a custom boot logo for UEFI booting? I can only find methods for Legacy users, but no luck with UEFI.

I'm kind of new to custom boot logos, so if anybody could give me some information as to if it's possible first?


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Just curious, but is there option for me to enable uefi boot of my Windows 10 Professional installation on my HP xw6600 dual quad core E5450 machine which holds two Samsung 850 Pro SSD's, one for Windows 10 and the other completely for Ubuntu LTS 16.04.When possible,  how to go about it. How do I enable this option. Yours truly, 

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After creating a UEFI bootable USB thumb drive with Rufus (using Windows 8.1 Enterprise ISO x64), for a Dell Optiplex 3010 (configured as UEFI only, no CSM, latest firmware version, Windows 8 installed), I didn't see a USB boot option, so I tried to add one manually. Unfortunately I erased the existing boot option (boot manager) by mistake. Although there were two boot options for PXE booting, the machine will not start anymore, even when there is an active WDS server on the network.

I also see Led's 2 and 3 lighting up, meaning according to the manual 'hardware ok but bios possibly damaged/corrupt'.

I understand I cannot start the machine from a bios boot disk because of GPT partitioning, and the UEFI USB boot disk I made might be corrupt (as it didn't show up as a boot option), however I don't understand why it won't boot from the PXE network card, as these boot options are still there.

Any suggestions on how to solve this?

Thanks for any useful tips,

A:Deleted Uefi boot option (Windows Boot Manager) by mistake

The Windows Boot Manager is held in the Bios and restores itself if you boot to a UEFI capable device. Could you please explain exactly what you did to "Add" the USB boot option?

I haven't used Rufus since it is so easy to just format the drive yourself, but it did format in Fat32?

I have the PXE boot options disabled in my bios since I do not have a network boot option.

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i've installed windows 10 on linux before and i've never had any problems booting it (from what i remember, through UEFI boot sources). currently the windows 10 iso seems to be the only one that isn't appearing in UEFI; i installed peppermint from lubuntu using the same image disk writer on the same usb 30 minutes ago.
am i supposed to have some specific settings enabled/disabled in my bios to boot the windows install? secure boot is disabled and legacy boot is enabled.

A:windows 10 usb not appearing in UEFI boot sources

Why are you enabling legacy boot.

Surely you want eufi boot, and also make sure usb stick is set for a gpt formatted installation.

Also installing windows 10 after linux generally breaks the linux booting. You would have to mess around with grub etc.

Usual advice is to install windows 10 then linux.

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I have a Dell Precision Tower 5810 running Windows 8.1 Pro 64-bit
I created Rescue Media for the Macrium Reflect Free Imaging Software on a USB Flash Drive.
I can boot to that USB Flash Drive IF I can first boot into Windows 8.1 Pro 64-bit
But, the chances are that when I will need that Rescue Media, I probably will not be able to boot into Windows 8.1 Pro 64-bit.
I have tried to directly access the UEFI by pressing the F2 key at the Dell Logo after powering on the System.  I also tried F12.  Neither has worked.
Is there something different that needs to be done on a Dell Precision Tower 5810 running Windows 8.1 Pro 64-bit to directly access the UEFI & change the boot sequence when I cannot boot into Windows?

A:Accessing PC's UEFI Settings if I canNOT boot into Windows

Below are some links to help you with the UEFI settings.
Access UEFI (BIOS) System Setup from Windows 8 / 8.1
How to troubleshoot and reinstall the operating system on Precision Desktop Workstations

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Windows 8.1: HP Pavilion 2475ea Desktop PC.
I have Secure Boot turned off. I have Legacy Boot turned on, but do not think that is needed.

This link gives me instructions to boot from CD but they seem not to make sense from No 2...

...in that at 5-6-7 it seems to require me to select the CD then boot to Windows from HDD then restart and do the same again, but this time select CD again, or something??
I expected to set the device, then restart the computer and it would boot from the device, not restart Windows as described.
I was able to boot from a WinPE 4b CD.

I then decided to try changing boot order in the UEFI BIOS. From then on the HP (F9) described menu showed 'Windows Boot Menu' only under UEFI Devices. I could only boot from CD after putting the order back to 'Windows Boot menu' at the top of the order list; after which, as long as the CD was in the drive the (F9) list showed the CD drive as selectable to boot from.

I find this, after 30 years of normal BIOS, to be confusing.
Can somebody help please?

A:Cannot set UEFI boot order to CD Windows 8.1 HP Pavilion

You can boot any DVD/CD/USB disk with WinPE4 in UEFI mode, with Secure Boot ON & UEFI mode ON.

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I'm trying to do a clean install Windows 10 Pro x64 v1703 (Creators Edition) from a UEFI USB flash drive created with Microsoft's Windows Media Creation Tool. It gets to the point of trying to partition Lite-on SSD it gives an error. BIOS updated to latest version 2.42 3/14/2017.I've tried to format SSD on another pc w/ diskpart select disk x, clean, convert gpt Has anyone been able to install Windows 10 with UEFI/Secure Boot enabled / CSM off? I'm guessing this model doesn't support full UEFI mode for Windows 10?

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i'm having the same issue. need to image in uefi mode for bitlocker and the 800 g3 will not pxe boot in uefi mode.

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I just updated my bios to uefi to get secure boot. but windows 8 compatibility tool still says my bios does not support have secure boot. Can i still install windows 8? I already ordered my upgrade dvd.

A:Can i still install windows 8 if my uefi does not have secure boot?

Yes, you can.

My UEFI BIOS doesn't support secure-boot either, and W8 installs and runs without a hitch.

Go for it, and good luck!!

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I was wondering if someone can help me on this.
I have a Dell XPS 15 L521X Laptop that currently has windows 8.1 installed on it.
Im trying to set it up as a dual-boot system with windows 7 as a secondary OS.
I have a Windows 7 X64bit OEM disk and tried to install windows 7 from the disk, but it would not allow me to install the operating system to a disk that was initalized as GPT. So I followed these instructions to make a bootable USB Stick Fat32 GPT to install media.

I set the bios to UEFI, Secure Boot: Off and attempted to boot from the usb stick. When the Start Windows Screen came up it hung. So I tried to boot that stick on another computer and got a windows failed to start error 0Xc0000225.

I cant reinstall Windows 8.1 because it has a programs and data on it that the owner does not want to reinstall or cant, is there a way to install Windows 7 in dual boot mode with a GPT Disk on this particular dell machine?

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Hi all,

I have just recently installed Windows 7 on the Plextor M6 Pro 128GB SSD. Everything went fine for the first few boots, and Windows will not boot up after that. The computer automatically goes into UEFI BIOS as if there is no Windows installed on any of the hard disks.

I removed the SSD and inserted it into the external enclosure and hook it up to my laptop via USB. Windows (on my laptop) did not show any removable media under My Computer. Upon firing up Disk Management, the following screenshot (Screen1.jpg) can be seen.

I humbly seek for advices of anyone out there who might be able to help me regarding this issue. I have previously successfully installed Windows 7 on all my older PC/Laptops. But this is the first time I have installed it on an SSD. My previous installation on HDD works well without issue (used it for 6 months before I reinstalled it onto the SSD). I ran into this issue twice within the same day (I reformatted and reinstalled Windows after my first encouter).

I will post whatever details required to solve the above issue. Also, any explanation and information regarding the issue as well as how to prevent it from coming back would be very useful.

Many thanks in advance!!

A:HELP!! Windows 7 on SSD failed to boot, goes into UEFI BIOS.

Hi there

In all cases ensure LEGACY BOOT is enabled if that option exists in BIOS.

1) First ensure PROTECTED BOOT is DISABLED -- this doesn't mean turning off UEFI.
2) Ensure the SSD is formatted to GPT and NOT MBR
3) Ensure your W7 install media will handle UEFI boot and install.

If you Don't want to use UEFI boot

1) Disable UEFI in BIOS.
2) Format SSD as MBR
3) Install W7 - default mode will be non UEFI.


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Hello everyone, I recently purchased a new laptop after about 8 years. Previously, I had BIOS in my old laptop from which while booting, I could easily press the F8 key and choose to boot from any other medium such as a USB or a DVD. So, suppose when my OS used to crash or get bricked, I simply waited for the BIOS to turn on, and I hit the F8 key to boot using a Windows DVD and reinstall the OS to solve my problems. But now, in my new laptop which has UEFI and Windows 8.1, suppose if the OS completely gets corrupted, how do I boot from a DVD?

The only way I know how to boot using a DVD is to load Windows 8.1 and then head into settings and schedule it to boot from DVD the next time, but what if I cannot load Win 8.1 at all?


A:How to Boot from External Media in UEFI Windows 8.1

F2 - DEL or ESC should get you into firmware setting to change boot order..

F12 - gets me into boot menu

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It started when I took one of my hard drives out of my case. Now when I turn it on, it will open up the UEFI Bios page instead of booting like normal. I have tried turning everything off and back on, taking out my hard drives and reinserting them, resetting some options on Bios, but to no avail. It ONCE booted into Windows, but then wouldn't let me through.... it locked me out? PLEASE GIVE ADVICE, I WANT TO DIE BECAUSE IT'S SO FRUSTRATING. NOTHING I FIND ON THE INTERNET IS WORKING. (Btw, I have Z170, not s87 or whatever. It's a different format?)

A:Stuck in UEFI Bios. Won't boot to Windows 10

Did you try to find somewhere "booting device settings"? If system was installed on drive you put out, you might have to set it as booting device again.

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I purchased Lenovo Z500 with Windows 8 installed on it. When Windows 10 upgrade started rolling out, I moved to Windows 10 Home.I have been running into some issues with my activation so had been trying to reset to factory default but that is also not happening.I created a Windows 10 UEFI bootable disk and went to the BIOS to set the USB as the first bootable disk in the list but it doesn't show up there.Now it did show up earlier (without me changing any setting in BIOS) when I was trying to do recovery using System Image Recovery option with Recovery Image in the USB. Anyways, now I'm trying to install the Windows 10 from scratch and then Ubuntu 16.x alongside Win10 however stuck at this very phase.I read quite a lot about UEFI and Secure boot and see that in my Boot menu UEFI is enabled and Secure Boot is disabled. Please refer the screenshots.Can someone explain me in detail that with this setting in BIOS what could be going wrong with my steps where UEFI bootable USB is not detected?Also, in addition to that if someone can point me to the latest document/discussion for Dual Boot with Windows 10 and Ubuntu. I might have it bookmarked but just in case.I would appreciate quick and detailed response.Thank you in advance.

2017-03-012.jpg ?50 KB

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I have an Aspire v7 and I am trying to install Windows 10. I have a USB formatted with UEFI install of Windows 10 64bit, and it works on my other computers, but I can't get my Acer to boot from it. I was able to switch to LEGACY mode in the boot options in the BIOS and install it that way, but if I go back into the BIOS to switch back to UEFI, it tells me no media is found.How can I get my laptop to boot and install in UEFI mode, or at least be able to switch back to UEFI mode after the installation?

A:won't boot or install windows 10 in UEFI mode

Did you use the windows 10 media downloader and application to create the UEFI boot usb? 

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Hi there
A colleague of mine got an HP ENVY ultrabook with W8 pre-installed plus a retail W8 pro upgrade for an extra 22 EUR.
He asked my to see if I could upgrade the machine to W8 Pro and install the IS display language pack for him.

The system has one of those wretched UEFI Boot thingy's in the BIOS.

I haven't been able to upgrade the installed windows 8 to Windows PRO -- and even trying to install from scratch via booting from an external USB DVD drive it just says after about 15 mins through the process "Windows 8 cannot be installed".

Fortunately the version of ACRONIS I use works with UEFI boot so I managed to take a backup before I started and was able to restore the original image that it had when it came out of the store -- I'd wiped the HDD when trying to install the Retail W8 Pro version- but the restore worked fine so the machine is in exactly the same state as it was when it came out of the store.

However I still would like to upgrade the machine to W8 Pro - mainly in order to change the display language from En to Is and to allow remote desktop connection to THIS computer.

You need at least W8 Pro for RDP to work correctly --you can RDP to OTHER machines using any version of W8 - but you need at least W8 PRO to allow incoming RDP connections.

Any help on upgrading a UEFI BIOS enabled machine to W8 Pro. The W8 PRO is the RETAIL version -- and the Windows version is X-64 English.

I've done loads and loads of Windows installs / re-installs etc b... Read more

A:HP envy with UEFI Boot -- cannot update to Windows 8 PRO

Hi jimbo45

The legal way to upgrade is with Windows 8 Pro Pack.

To uograde to Pro Pack
No install files needed.
Only the Upgrade key is need.

Add Features to Windows 8
use the Windows 8 Pro OEM full version.

To upgrade to Pro OEM full version.
No install files needed.
Only the Product key is need.
Add Features to Windows 8

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