Over 1 million tech questions and answers.

Change letter of the boot drive or the system drive

Q: Change letter of the boot drive or the system drive

Change letter of the boot drive or the system drive

Under xp pro is possible but I haven't try under windows 7 64 bits.

xp is possible according to

How to restore the system/boot drive letter in Windows

Do you know the procedure ?

Best Regards

P.D. I have seen a pair of post in this forum but I was not able to determine....

Preferred Solution: Change letter of the boot drive or the system drive

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

A: Change letter of the boot drive or the system drive

It seems to be the same. But why on earth did you want to do this.

Read other 9 answers

pls help
presently my windows Xp sp2 is installed in drive E.
I want to apply a patch to a software......for security reasons
but the patch is only applicable to C which should be boot drive.........but my boot drive is E
wat can i do?
i just wanted to change drive litter from e to c, without reboot i'll apply patch, then i'll change it back to e!
can i use partition magic 8 for this purpose!!

please help!! reply to my doubts!!!!

A:How to change System/Boot drive letter???pls help

Instructions to change a drive letter here,http://support.microsoft.com/kb/307844

Read other 4 answers

So here's the problem. Had a nice clean install of XP Home running perfectly on a new P4 Canterwood system, with an old Maxtor HD. Thought I'd upgrade to an 80 GB WD Caviar special edition. Installed the new HD, initialized and formatted thru disk management into two partiitons, which were assigned G and H (C, D old HD; E, F, CD/RW). Copied all of C to G, using the WD Data lifeguard tools.

Reconfigured the WD from slave to master, and tried to boot into XP, figuring no problem, since entire content of the old C drive had been copied; no go. Boot hung every time at the blue Windows XP screen, after the black XP boot screen w/ the green running bar indicator. not promising.

So I do a repair reinstall. The path shown for the current installation is C:\Windows, as I'd expect since the new HD was the only drive connected. Repair reinstall goes smoothly, boots fine, most settings are saved, so far so good; but then I notice that NONE of the installed programs will run, because path names can't be found. Also found it odd that in Windows Explorer view, all of the folder ocons that should be on the left pane were missing. The names of the folders, discs etc were still there, but no icons.

Very strange. I go back to disk management, and lo and behold, XP has carried over the name of the first partition as G!! Not surprising that nothing will run, when all apps are still looking for a C:\ path, and the actual boot/system drive letter is G. So I try to rename G: to C:, only to ... Read more

A:Need to change boot/system drive letter

I suggest you try the copy again, using the WD tools to copy the image over. You will spend a lot more time screwing around with getting the registry correct than it'll take to do another copy. :)

Don't boot the old system after the copy with the new disk still attached as slave. Once the copy ends, turn off the system, put the new disk in as master, and boot it up.

Read other 3 answers


Ok, here's the situation, I want to install XP Pro on a former XP HE (I say former because there are so many corrupt/damaged system files that no Win DVD, or live CDs can recognize it..), on a Vaio VGN-A617B laptop.
I would prefer to do a factory recovery from the recovery partition but there seem to be some problems too, it can't set up properly.

In short:
I got the error "unmountable drive" after a system crash.
After trying unsuccessfully to repair it with the recovery console doing chkdsk/fixboot/fixmbr, I tried to replace the files using the repair option on a Win DVD (not from the recovery console) but it couldn't see any previous Windows installations and only listed the partitions leaving me with set up/create/delete options.
I made a BartPE DVD to copy and save some personal files on an external drive.
Unfortunately, BartPE completely messed up the drive/partition letters and gave the letter E to the external drive, but E was the hidden vaio recovery partition, so C was assigned to it...
After restarting the laptop and unplugging the external drive, the vaio recovery partition kept the letter C, and E was given to the system volume...

So, now I am left with a laptop that tries to boot from the unworking recovery partition (it worked before the letter change), and a useless system volume that doesn't work.

I tried to change the letters and give back the E to the vaio recovery partition hoping that it would work but I can't,I ... Read more

Read other answers

How to change the system/boot drive letter in XP

If you break a mirror volume or for some other reason the drive letter of your system and/or boot drive gets changed so that the drive now has the wrong letter (not the one assigned to it when you installed the OS), you'll find that the Disk Manager won't let you change the letter of those drives. This is to protect you from making changes that render the OS unbootable, and you should make those changes only if the drive let gets changed as described above. To do so, you have to edit the registry. Be sure to back it up first.
Log on with an administrative account.

Click Start | Run and type regedt32.exe to open the registry editor.
Navigate to the following key: HKEY_LOCAL_MACHINE\SYSTEM
In the right pane, click MountedDevices.
On the Security menu, click Permissions and ensure that Administrators have full control.
Close regedt32.exe and run regedit.exe. Navigate back to the same registry key.
Locate the drive letter you want to change (such as \DosDevices\C:), right click it and select Rename.
Rename it to the letter you want it to have (such as \DosDevices\D:).
Close regedit.exe and run regedt32.exe again to change the permissions on the key back to Read Only.
You'll need to restart the computer for the change to take effect. Be very careful about renaming drive letters of system/boot drives.

Read other answers


I have a problem, that sometimes, after installing Win XP (SP-1), I find the OS installed to another drive then C:.

The machines I've had this problem with, had one (new, empty) harddisk, and a CD-ROM burner installed. The harddisk was always more then 100GB in size.
Usualy the CD-burner would get E: and the harddisk would get F:
I haven't been able to find out why C: and D: is not available from boot.

But is there an easy way to change the drive-letter, once it's been assigned?

I'm looking forward for your replies.

Best reards,

A:Change drive-letter for XP boot drive?

Read other 14 answers

I deleted my existing OS then created two new partitions on the same drive. Then I installed Vista on one partition and that partition was properly named "c" as ususal. Then I started Win7 setup.exe from a different hard drive and let Win7 install itself into its own partition. When I got to "My Computer" the Win7 partition was labelled as "I" instead of the expected "C" which had never happend before when I did the same thing.

Does anyone know a save way to label the Win 7 drive as "C" while in Win7?



A:How to change drive letter for boot drive?

In the search box, type "Computer Management". From iwithin computer management select disk management and you will see the ability to change drive letters. I don't know if this might mess up your ability to boot though.

Read other 9 answers

I have a drive that has a lot of information on it that I need. A user left our company and all of his files are on this drive. I was handed it and asked to build a VM with all his information on it. When I plug the drive in it loads the drivers and shows
up just fine in Computer Management (shown below), but not in Computer. So I think, ok, I'll just add a drive letter but that option is greyed out and won't let me. The disk is initialized and appears to be healthy. I have gone to device manager and made sure
there were no problems there as well. It was also an external drive so I removed it and made it an internal drive on my machine but got the same results. It shows up in BIOS but obviously can't boot off of it since it is not an OS drive.
Deleting/formatting the drive is not an option. Is there a way to get this drive accessible without that? Deleting it is the exact opposite of what I want done here. 

A:Change Drive Letter and Paths... greyed out. Can't assign drive letter.

That looks like a mac formatted drive, that's why it wont work on your PC. Try installing Paragon HFS+ for Windows.

Read other 13 answers

Hello, first of all thanks to anyone that trys to help.

Here is my problem. I recieved a HDD for christmas and I wanted to install Windows XP onto it. So I took the existing HDD and swapped the jumper settings and cables to slave and set the new HDD to Master. I installed Windows XP onto the new HDD. Now I want to change the drive letter of the new Windows installation from F:\ to C:\. I already changed the old letter C:\ to letter J:\. But I can't seem to change F:\ to C:\. I have tried doing this with PartionMagic 8.0.

Any help would be appreciated.

A:How do I change the System Drive Letter

The problem is that when you installed the old drive
had already been allocated drive C.
Windows will not allow you to change the system drive.
In order to get around it,you will need to reinstall
with the slave drive disconnected.
Since you have changed the original drive,
you may not have to disconnect it but a
reinstall is needed to make your system drive C.

Read other 2 answers

I have Win 7 running from C: drive and another Win 7 from D: drive (pro versions with different languages).

I have to change the boot drive in the BIOS of the motherboard, each time I want to switch the OS (rarely).

I bought an SSD recently, switched to the D: boot, connected it over USB and used the supplied Samsung disk mirroring utility to move the system to the 840 PRO automatically (it's obviously used D: as the current system drive).

Then, I have removed all of the old drives (C: and D: ) and installed the SSD in place of C: drive.

The system booted fine, except for the "temporary user profile" warning. The SSD have the C: letter.

Using regedit, I have fixed the "temporary user" issue (renaming the .bak profile entry and correcting the user path inside).

Then, using the regedt33 app, I have replaced all of the "D:/"s to "C:/"s in the registry and rebooted.

The system seem to work fine on the surface (surely, except for some shortcuts).

My question is: what else should I check, to make sure the system is in perfect shape now? One of the ideas - search for any "D:/"s in the files on the disk (configs). Does anybody know of any Windows 7 config files, I have to take care for explicitly? Another idea is to run some system integrity checking app - could you recommend any?

Just please, don't use the "clean install" words in your answer, I'm fed up with that Google search result already.

A:Change system drive letter

SSD - Install and Transfer the Operating System Just do settings after OS transfer. If has great info on what you should do to make the system perfect after transfer.

Read other 3 answers

Does anyone know if it's possible to change the system drive letter?

I reinstalled WinXP on a system with Win98 already on it. WinXP was assigned the drive letter H, the letters between C and H being used for for various IDE devices.

Of course Device Manager/Drive Management does not allow one to change the system drive.



A:How to change SYSTEM drive letter

Read other 10 answers

Hi people......Could I have help with this please. I have had to reinstall xp pro because of a virus attack.
The result was it changed my boot drive letter to D from C and I wonder if
it would be safe to change it back with no bad effects.

A:change boot drive letter

Read other 12 answers

I recently had to wipe the hard drive of a new computer (Intel mobo, core duo E8400, 500GB Seagate drive) clean because it had developed some problems (like having to reboot after coming out of standby or hibernate), and no system restores or Windows XP repairs did anything. I use a program suggested by J & N computer support, where the custom computer was build. It's called "AEF", which you run from a CD. It destroys the partition on the HD. However, the only option I could find when I ran it was "delall", which deletes all partitions. When I installed Windows, it assigned drive letters to the card readers FIRST, and the HD last. So now my HD is H: and my CD/DVD writer is G: IOW, it assigned the letters in reverse order.

Diskmgmt.msc will not allow you to change the boot drive letter. I would rather not have to destroy the partitions again to get it to make the boot drive C: (how do I do that, anyway when the Windows install disk seems to have a mind of its own?). Is there any commercial software on the market that will allow you to change the boot drive letter?

A:Change boot drive letter

Read other 8 answers


I want to change the drive letter of the drive on which Windows 7 is installed.
It is currently F:, and I want to change it to K:

It is not possible from the Disk Management as I tried.

Please help with this. Thankx for any help.

A:Change the boot drive letter

If you are not able to change the drive letter using disk management, then follow the link which is mentioned below to change the drive letter.
It is mentioned in Microsoft article: How to restore the system/boot drive letter in Windows



Read other 2 answers

I have a 5 year-old PC clone using WIN XP/Home. My boot/system drive was an 80 GB WD ATA labelled C. I installed a 160 GB Seagate ATA and used MaxBlast to clone it to the WD. Then I configured the Seagate as the master/boot drive and the WD as the slave. Now my PC calls the Seagate Drive F and continues to call the WD Drive C. All my programs seem tp be working OK but I would like to call the Seagate Drive C and the WD Drive F. Disk Management will not allow changing the letter of the system/boot drive. How can I get around this?

A:How can I change boot drive letter

Hi agradziel,

It's generally not recommended to change the system partition letter as it can cause serious problems. The most logical way of doing it would be to back up what you want to keep from the Windows installation and format then reinstall which isn't too convenient but will save a few potention headaches....

Or you can read the following link for the alternative method:

Hope that helps

Read other 11 answers

My hard drive is 1 terobytes.
I partition it 200gb & 800gb.
C: drive, 200gb, was installed with xp pro sp2 and D: drive, 800gb was my storage with no operating system.
I had to refomat the C drive.
my storage D drive is now the C Drive and the C Drive is now the storage D drive.
so the D drive is now the drive with the OS and the C drive is storage
can some one help me to fix this problem

A:change boot drive letter

Hey, i'm struggling to work out exactly what the problem is... Does the OS load?

If the OS loads and you want to change which drive the pc boots from then:
- download EasyBCD
- Open it
- Change to the "Change settings" tab
- Change the drive letter
- Click "Save Settings"

If you're just looking to change the drive letters of your partitions then look here:

^Sorry i would have gone through that myself but i'm on vista.

If i've misunderstood the problem then please post back saying so =]


Read other 5 answers

I've got a clientt's Gateway computer with the following drives:
A: floppy
E: DVD/CD Writer
F: USB Harddrive
G: Some Removable Drive

The Goal was to replace the current C: drive with a new hard drive (H.

1) I did a full restore from the client's latest backup to the new drive.
2) I swapped the drives (C: is now the slave and H: is master)
3) I booted successfully into the H: drive.

What I wanted to do is change the H: to be the C: drive. So I deleted the page file and renamed the C: to I: and rebooted.....OOPS. I guess that the H: was still pointing to the C: for files/information.

Is there any way to change the I: back to C:?

Thanks for the help.

A:XP won't boot after drive letter change

Read other 12 answers

Is there a way too change the system drive letter, without having to reinstall windows? If there is what is it?

A:[SOLVED] System Drive Letter Change?

Erm, this is marked solved with no responses.

Changing the drive letter is a bad idea. Having something other than C:\ as the boot drive is very inconvenient, but the risk IMO is too high. Many applications do not work after the drive letter change process.

Read other 2 answers

I installed Windows Server 2008 R2 onto a computer that was running Windows 7. I installed it onto the secondary partition, D:\. I assumed Windows would automatically switch the drive letters around to make the System Drive C:\. It didn't.

How can I change the system drive letter without breaking everything and without a complete reinstall? I've tried the obvious method of 'just' changing the drive letter but that ended with the PC not being able to boot at all.

If some one can enlighten me I would really appreciate it.

Thanks in advance .


A:Change System Drive letter without breaking PC

I would try changing the Drive letter to C: and then run Startup Repair - you may need to run it up to 3 times.

Startup Repair

Read other 9 answers


I have:sda0 - C:\ Windows
sda1 - F:\ System-reserved user data (NTUSER.DAT etc)
sdb - Unformatted
I want:sda0 - C:\ Windows
sdb0 - F:\ System-reserved user data
I get to:sda0 - C:\ Windows
sda1 - F:\ System-reserved user data (NTUSER.DAT etc)
sdb0 - X:\ Unused User data (NTUSER.DAT etc)

And this on a lot of PC's that have been installed falsely and have been delivered.

The partitioning works like a charm, but I cannot find a way to change drive letters externally. Internally would not work of course, since any user I log in to will have his system-reserved data on drive letter F:\

Does anyone have an idea?


A:Change system-reserved drive letter

Quote: Originally Posted by ciscam


I have:sda0 - C:\ Windows
sda1 - F:\ System-reserved user data (NTUSER.DAT etc)
sdb - Unformatted
I want:sda0 - Windows
sdb0 - System-reserved user data
I get to:sda0 - C:\ Windows
sda1 - F:\ System-reserved user data (NTUSER.DAT etc)
sdb0 - X:\ Unused User data (NTUSER.DAT etc)

And this on a lot of PC's that have been installed falsely and have been delivered.

The partitioning works like a charm, but I cannot find a way to change drive letters externally. Internally would not work of course, since any user I log in to will have his system-reserved data on drive letter F:\

Does anyone have an idea?


Hello , It seems to me that your trying to change drive letters. If that's the case follow this guide..
Change, add, or remove a drive letter

Read other 9 answers

I've installed Windows 8 starting the installer from Win8 RP and I've just noticed that it picked up the drive letters from the old system. Now my system drive is Y instead of C , because in the old system that partition was Y.
If I try to change the drive letter in the Drive Management it gives an error.
Does anyone know how to change system drive letter in Windows 8 RTM?

A:How to change system drive letter in Windows 8 RTM?

This can definitely be a pain. I believe this article may help:

How to restore the system/boot drive letter in Windows

Read other 6 answers

I am hoping someone here will know what I should do.

I installed an old partition I imaged ready to put on a new hard-drive. I need to make it so the system does not see it as drive letter "C" as that is not what it was originally (particularly when the programs on it were installed). I boots up fine most of the way but then when it gets to "Preparing your Desktop" it hangs for a long while and when it comes out of that, it dispays "This version of Windows is not genuine"

I should sat at this point, My copy of Windows is genuine.

Is there a way I can change the drive letter of this partition back to the value the installations on it expect as at the moment it thinks it is "C:" which I believe is what is causing the problem

The old partition I am installing did not have the drive letter "C", it had "O". I know this was a bad mistake to make but it is too late to change now. This is the partition I used that has the most programs installed which are useful for my uni coursework. I can start afresh but would rather not spend all that time at the pc basically waiting for each installation process to run.

Read other answers

I have a triple boot of XP, Vista & Windows 7.

I have all 3 operating systems on 1 hard drive.
I have a second hard drive that want the same drive letter on all Operating systems (Letter D).

I have XP Setup, I have Windows 7 Setup (changed drive letters to get D on the drive I wanted on both oerating systems.

When I try to change my Windows XP's partition Drive letter in (Vista). Vista says: Windows can't modify the drive letter of your boot volume. This may happen if your volume is a system or boot volume, or has page files.

I am also using EasyBCD to manage by boot orders. Was installed on my Windows 7 partition.

How can I get the drive letter changed on my Windows XP Parition in Vista?
I need to change it because in Vista my Windows XP partition is letter D which I need on the 2nd drive.

If this can be done, it will still boot all 3 operating systems correct?


A:Triple boot Can't change Drive letter

hi, giving names to the drives will let you know which is which.

easybcd is on each in a small btldr sort of file. don't mess with it.

if they boot fine, just name them.

Read other 3 answers

In 7 everything is all right.7 is c: and the boot partition is hidden.
But in XP the hidden partition is c: and visible.XP is d:,so some programs use default dir can't work.I tried disk management to change xp to c: but didn't succeed.
Anyway to change the drive letters and hide the 100m partition?

A:How to change drive letter in XP when dual boot with 7?

Quote: Originally Posted by justi

In 7 everything is all right.7 is c: and the boot partition is hidden.
But in XP the hidden partition is c: and visible.XP is d:,so some programs use default dir can't work.I tried disk management to change xp to c: but didn't succeed.
Anyway to change the drive letters and hide the 100m partition?

Have you tried Disk Management, right click the partition you want to hide, select Change Drive Letter and Path, click Remove?

Read other 9 answers


I've just come across an odd problem. There's a soulution on MicroSofts suport site on how to change the main drive letter back to C:\ should it have changed somehow.

Following instructions everything went according to plan up until the reboot. The main drive is now C:\, but everytime i log in it logs straight back out again without even getting to the desktop.

Has anyone else had this problem and overcome it? If you have, i'd greatly appreciate any tips you could give me. Data loss is not an option unfortunantly. *Sigh*

Thanks in advance

A:Problem after boot drive letter change

I do not know what it was before you changed it but everything in Windows was set to that drive letter and when you changed it to C:\ Windows can no longer find anything because everything is set to the old drive letter. The one thing you should not change is the boot drive designation.

You may not even be able to get to safe mode now, and that is a bummer. We will work on getting your data safe and backed up.

First thing you are going to need is another computer and it has to have a burner in it, doesnot matter if it is CD-R or DVD but preferably DVD burner.

You are going to have to remove this hard drive from this computer and install in the other computer as a slave drive and when it is able to be accessed by Windows you will have to backup all of your data manually and then burn to a CD-R's or DVD.

When all of the data is backed up you then re-install the hard drive into the first computer where it came from as a master drive on the primary IDE cable and then format the drive and totally re-install Windows. Use this document and print it for reference if needed

Microsoft KB - How to perform a clean boot in Windows XP

Read other 1 answers

how can i change the drive letter of my boot volume

A:change the drive letter of boot volume

Read other 11 answers


i have windows 7 desktop. there are some partition on it.but there is problem with these partition. All the three partition have the same drive letter.i attach a link showing the picture. all three partitions are dynamic , simple. if i open these drives only the contents of one drive are appeared. another two drive data are not shown in any manner.

i don't want to lose any data from any drive ......
please help me sir...
my windows is installed in c:\ drive which is also dynamic and there are no recent changes.only one change i did which is i shrink dynamic volume 50 GB from 206 GB and again mixed with 206 GB without allocating free space.

and only the c drive is on and d drive is off.but in my other desktop same configuration exist.
please help me...and please don't say change and remove drive letter...........waiting for response

A:changing one drive letter all 3 partitions change to that drive letter

First thing you're going to do is fill in the specs of the desktop whose snips you are showing us.

Then you're going to do the same with the second pc opening a second post with snips. Give it a different title like "Second pc with drive letters the same". Don't forget the snips.

You should not have dynamic disks in either machine. What did you do to accomplish this?

There exists a bevy of spectacular experts on this site that will be happy to help you. But give us ALL the info please.

Read other 9 answers


My first post here so I hope I am in the correct place.

Here is my problem...

I installed Windows 7 Pro 64 bit on a new Seagate 1TB drive. During the Windows 7 install I created a 250GB partition where the Windows files would be installed. I also left an unallocated partition that I would later use as a data drive (for storing music, videos, docs, etc).

As normal, the Windows 7 installer stated it would need to create a system partition where the boot files and other mysterious files would be stored. Indeed, after installation it had created a 100mb system partition (which I believe is normal).

In Windows I used the Disk Management utility to make the Unallocated partition useable. As a result I had the following partitions:

System partition (no drive letter assigned)
C: Boot and Page File partition (where Windows is installed)
D: Data partition (where music, videos, docs, etc will be stored)

So far all is well However...

What I needed to do was follow the simple procedure in the following link to move my C:\Users folder to D:\Users...

Move All User Folders to Another Hard Drive – Windows 7 > How - To @ MaxMakeDesign.co.uk

After following the instructions to get to the dos command prompt via the Windows install/repair DVD I was bemused to find that the system partition (that had no drive letter in Windows) was drive C:, my boot partition where Windows is installed (drive C: in Windows) was drive D:, and my data drive (drive D: in Windows) was drive ... Read more

A:Need to Change Windows System Partition Drive Letter

Maybe this would be easier.

User Profile - Change Default Location

Read other 9 answers

I have just got a new hard drive, loaded Windows XP, and installed all the programs/drivers that I needed, all was well and good, until I notice that what should be the C drive, is actually the G drive

I didn't think it could be done, I know you can drive other drive letters in but trying to change the boot drive letter, you get the following message "Windows cannot modify the drive letter of your system or boot volume".....

Found this online, which Iím happy to try, but not too sure to be honest.

Any advice would be welcomed; otherwise next week when Iím at work again Iíll start the tedious process of re-installing everything!

Thanks very much, lanks

A:Solved: How can i change the system volume drive letter?

Read other 7 answers

A mate of mine bought an old dell at a car boot sale for €20 it had 20 gig pata running xp so i had an 80 gig ide which i said he could have
Anyhow i connected 80 gig up as slave on primary controller and installed xp pro on it for him
After installation i removed the 20 gig and put 80 gig on master on primary,i dont know why i didnt do this at start,but damage was done
I am getting quick message saying invalid bootini but then machine continues to boot with no problems after that
The issue i now have is the system partition is assigned drive letter D instead of C
How can i change os partition to C


A:[SOLVED] Change drive letter on system partition

Remove all drives except the System Drive (previous D:) which is on the Primary Master controller with the jumper pins set to Master, and restart the computer. The System drive will now be C: Now shut down the computer and add the 20 Gb drive on either the Secondary Master controller with the jumper pin set to Master or with the jumper set to Slave as a Slave Drive on the primary chain, on restart it should be the D: drive.

Read other 13 answers

I would like to know how to have the same letter in the two partitions which I dual boot.For example,when I boot into Windows 8,the boot partition's letter is C:,but Windows 7's partition letter is G:.I shrank the C: partition,formatted the new one and didn't assign any letter.In a previous time,I could have Windows 7 partition as C: when I booted into it and the 8 one had the letter E:.The installation DVD showed the non-assigned-a-letter partition as G:.What shall I do?

A:How to change the drive letter in a dual boot computer

If Windows 7 isn't C when it is booted then this is because it was installed from another OS and not correctly booted to install. This blocked the C letter from being available to assign to it.

Windows 7 would not be expected to be C when it is not the booted OS, as the booted OS should always be the only one assigned C.

Read other 9 answers

Windows 7, 32 bit, 12 partitions on 3 hdd's, Windows 7 on C:

When migrating to Windows 7 I first tried to update my Vista which I had used happily for 2 years. Installation went fine, but there were too many problems after.

So I bought a new 1 GB hdd and installed Windows 7 there from scratch. It is on a partition with drive letter C.

I copied most of my old partitions to the new hdd, went fine.

When trying to delete one of the old hdd's with EASEUS Partition Master Home 4.1.1 manager software, there is one partition on it (which once before was called C, then successfully renamed to Z ) which I can't delete. I has on it the following folders:
System Volume Information (locked)
-->and files:

They are only 30,5 MB in size. So I resized the partition to 1 GB.
EASEUS characterizes it as Status = System, Pri/Log = Primary. Windows Disc manager characterizes it as System, Active, Primary Partition.

My question is: Can I change the drive letter from Z to B without risking the whole system to be unbootable? (and maybe never be bootable again?)
When trying I just get the usual Windows warning.

I would be most grateful for an answer explaning what and why or why not.


A:Change drive letter for presumable needed boot disk

Hello Mick,

Welcome to 7 Forums.

Could you post a pic of Disk management. Info here if needed. A Preferred Method of Uploading/Posting Screen Shots


Read other 9 answers

Dear All,
I just install al dual boot of winxp and win2003 ent. winxp is at the primary partition as C: and win2003 at 1st logical partition as d:. after installing it work fine. but after I do the windows update and patch to the most updated and reboot the system. to log into winxp it still function will but after boot into win2003 it showing error msg. it due to currently the win2003 drive letter change from the d: become c: now. so it make the system file unable to locate the correct win2003 file. because currently win2003 file already the drive letter with c: and the winxp file become d:. but the win2003 OS still keep on looking it own file at the d: path. any one here facing this kind of problem before? any way to solve it or change the win2003 file drive letter to become d: again? thank you

A:Drive letter auto change in win2003 make system error

Right click on My Computer on your desktop and choose manage, in the new screen that pops up choose for Disk Management and richt click on the disk you want to change the drive letter from, first change it to something like E so the C is empty. Then change the D to C and E to D again!

Good Luck!

Read other 4 answers

I've done quite a bit of reading but have not found a specific answer to the title of this thread.  The system reserved partition for Windows 7 is created and has assigned the drive letter D:.  While I have no problem with the system partition
per se, I would prefer no drive letter to be assigned or to able to change it at the very least.

A:Change or remove Windows 7 System Reserved partition Drive Letter

It is highly unusual for Windows 7 to assign a letter to the reserved partition.  It is more likely that someone assigned the letter D: to that partition.
However, you should be able to go to the Disk Management and remove the letter on that partition.

Read other 20 answers

Summary of Problem:

The operating system has seemingly reassigned my c: drive to another letter and now the system will not boot because it doesn?t find c: drive. How can I get drive assigned back to be c: and restore ability to boot into windows.

Other key points:

I have confirmed in bios that the drive that was originally c: is configured correctly and set as primary boot priority. Other drives in bios are also fine.
I have confirmed that all hardware connections are solid.
I have found, through the dos window available on the recovery disk, that the drive which was originally labelled as c: is now accessible through dos as the f: drive. You can view the windows directories, files, etc.
The DVD drive which was originally labelled as the f: drive is now the g: drive and is functioning.
Other 2 drives (D: and E) are fine and viewable through dos.
Typing Dir C: in the dos prompt gets a response that the contents are system reserved and ?file not found? with no information on disk size.
I believe this issue was triggered when I plugged in a USB external hard drive and then turned on the computer to boot. This was the first time the problem occurred. Prior to this all was functioning as expected.
Tried to use restore, but it cannot restore because the c: drive is not accessible.
I found the following article in the MS knowledge base, but it requires access to windows to execute. I don?t know how to get into windows with the machine in its current state. ht... Read more

A:Op system reassigned my c: drive to another letter - cannot boot

unplug the others drives and boot

close down and replug in the other drives

Read other 9 answers

Okay, here's my problem. I have 2 hard drives in my system: C, which has Windows XP on it and D, which contains data only (mp3s, videos, images and so on). I have reformatted my C drive today and reinstalled XP on it, BUT for some whacky reason this drive has changed to D and what use to be D has now become C but it doesn't have any boot or system on it. So when I try to boot my system I get an error message (sorry don't recall what it is exactly), I can only manage to boot using the Win XP CD.

So now I'm trying to switch back the drive letters, but I'm not sure if it's doable. I tried (by going in the administrative tools) but Win XP doesn't allow it. Is there any way to make things right again? Or do I need to reformat everything again...?

Thanks for any help!

A:Boot/system drive letter problem...

Read other 13 answers

Hi guys
in my desktop I have two hard disks ( disk 0 and disk 1 ) . Disk 1 is a clone of disk 0 created by Macrium Reflect
Disk 0 : ( C: ) windows 10 pro , upgrade from windows 7 , ( E: ) windows 8.1 pro , ( G: ) Storage partition
Disk 1 : clone of disk 0
problem description : I see in msconfig / boot a wrong listing
windows 10 ( C:\WINDOWS) : Current OS ; Default OS
windows 8.1 pro ( H:\WINDOWS ) instead of ( E:\WINDOWS )
nevertheless the dual booting works fine as well as the shift between the disks via BIOS.
The question is , could I fix the situation using the EasyBCD of Neosmart Technologies to edit the bootloader ?
I see can change drive letter H: to E: and save the change , am I right or wrong ?
or any other way
any help appreciated , thanks .

A:wrong drive letter in msconfig / boot in dual boot system

from Admin command, type: bcdboot E:\Windows
From msconfig, delete the entry pointing to H:

Read other 1 answers

I have a USB external hard drive that I keep all my documents etc on (had it for years)

I upgraded from Vista Home to & Home Premium then had to upgrade recently to Professional to run my Sage. Through all these upgrades my ext. drive ran fine. Occasionally the drvie letter would change if I had something else plugged into the USB, this was always easily corected in disk management by changing the drive path.

The connection on the case packed up so I had to get the drive put into a new case, now when I plug it in the drive is assigned G instead of F, I tried to change the drive letter allocation in Disk Management but it won't let me as the program still thinks I have a second ext. hard drive which is labelled F. I suspect this has happened because when the usb connection broke the drive was disconnected suddenly instead of a proper eject.

How do I get Disk Management to remove the inactive drive - i can't find any obvious way - eject, delete etc are all missing when I click on tools or tasks.

If there is no easy way then how do I stop program updates for Adobe etc. failing because they can not find the F drive. I don't know why they look at that drive anyway.


A:External Hard Drive - Drive Letter changed - unable to change back


Welcome aboard.

Try this:

Download drivecleanup.zip V 0.8.1 from

Drive Tools for Windows

Unzip to a folder. In it you will have two folders Win32 and x64, each containing DriveCleanup.exe for Windows 32bit and 64 bit respectively.

Now unplug all the USB devices from your PC (except of course the Keyboard and mouse), right click on the appropriate DriveCleanup.exe for your system and run it as an administrator.

This will remove all non-present drives from the registry.

Reboot and then plug-in your external drive.

The drive will be installed and hopefully you should be able to assign any free drive letter to it.

Please report whether it resolved your problem.

Read other 2 answers

My External Hard Drive (My Book) was always Drive letter F.

I went to sleep and woke up to find Windows 7 Pro had updated and rebooted and I was welcomed by my login screen.

Consequently now my My Book external HDD now reads as Drive letter G.

I went into Administrative Tools > Computer Management > Disk Management

Drive letter F is not available.

F is assigned to a drive that does not exist and never has. I am confused. I only have one CD drive and it says now that I have 2 even though the one addressed as F doesn't have any information. If I click on F it says "Insert Disk"

A:External Hard Drive (F) Drive Letter changed to G - Can't change back

Update: The mysterious other CD Rom drive seems to be MagicJack.

I did some research but the following tech help did NOT work as you can see by the previous post picture that it doesn't not show it up in Disk Management:

MagicJack/Support Resources/How-To/Assign Drive Letters - Wikibooks, open books for an open world

Read other 8 answers

I'm booting off my SSD which is drive C:\ and I have games and programs on an extra hard drive which was origanally drive H:\ but after a restart it switched to I:\ and when I go into Disk Management to change it Drive H:\ isn't there.

A:Hard drive isnt allowed to change the correct drive letter

Hi KiityCancer,

What you say makes perfect sense. So, if a restart changed the drive letter to I, then H won't be there. Why not just leave it at I or is there more to this story...

Read other 3 answers

Hi all,

Windows 7 Home Premium 64 bit

I did a sytem restore and waited for it to finish. When it did all I got was a black screen.
I use acronis home image and disk director for backup purposes and when I launched it from a CD that was when I realised my C drive letter had been changed to F and my 'System Reserved' now has a drive letter of E

I have taken out the drive and hooked it up to a laptop, the drive itself is fine and all the information is there, just that it now has different drive letters.

Is there any way to fix this?
Can I use the laptop to reassign the drive letter back to C (Bearing in mind the laptop has a C drive) and get the 'System Reserved' back to where it belongs (With or without a drive letter)?

Thanks for any help

A:System restore changed my C drive letter so can't boot

What you did is not clear. Did you do a system restore with the built in restore option or you restored an Image that was made with Acronis? Please clarify.

Read other 2 answers

I lost my Event Viewer, and had to do a repair installation to fix it. Unfortunately, during the repair install, Windows decided to rename my second HD as the D: drive... it was K: before that. Now I cannot access any of my docs, pictures, music, or videos through the normal means... they don't show up in libraries or explorer, and apps like Restorator and Sure Thing (CD labeler) cannot find them. I think that means the paths are broken..?

It won't allow me to rename the HD back into K: (it's not listed as available). I can access the data by clicking Computer > D, and I can see the data is there, but its unusable as of now. Any ideas?

A:Can't change hard drive letter to needed letter

Hello Stevie,

To be safe, you should create a restore point before doing this in case you make a mistake and need to use it to do a system restore.


1. If the K letter is not being used by another internal drive, then you can open regedit and navigate to:HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices
2. In the left pane, Take ownership (step 2 in Option Two of METHOD TWO) of the registry key MountedDevices and "Allow" yourself "Full Control" of it as well.

3. In the right pane of MountedDevices, right click on \DosDevices\K: and click on Delete and OK.

4. Restart the computer to apply. You should now be able to change the second hard drive letter to K.

Hope this helps,

Read other 8 answers

Hi, I hope someone out there can give me some advice on what I need to do.

I've just bought a new computer for making music on, this is an upgrade from my old XP system. The computer comes with (when it arrives) windows Vista, I have also bought another copy of XP.

What I would like to do is create a dual boot system with XP and Vista but after looking into this I came across a problem. I have a second hard drive with all my music files on which is an E: drive. After reading an installation guide for a dual boot system I read that the second OS installation automatically installs the OS as E:.

My problem is that my 200GB E drive is full with music project files that need to run from the E drive because they contain audio files, changing the drive letter would cause each project to be unable to locate it's audio files.

What I need to know is if there is a way I can install the two OSs on one hard drive and keep my other hard drive as E:.

I've heard about virtual PC but I'm not sure if using this it would be possible doing it this way either...

If anyone's got any advice it'd help me out loads


Read other answers

I am trying to help a friend.

I built a desktop computer for him, Dec 2011.
W7 Home Premium SP1
HDD haD a single partition, C:, onto which I installed W7, using a legitimate, commercial W7 DVD.
W7 was activated. Updates were downloaded & installed using W7's automatic update feature.


The HDD is seen by the BIOS; within the BIOS and from the boot menu.

16 Aug 2012, the computer worked properly; shut down normally.

The next time he turned the PC on, 19 Aug 2012, the boot process proceeded through the Windows 7 splash screen.

NO login screen appeared.

Spontaneous reboot.

W7's automatic repair screen appeared, advising that W7 could not be repaired.

Things I have tried:
System Restore point; tried twice.
1 restore point, for 15 Aug, notes Windows Update.

System Restore advised that it looked at the D: drive for restore points. None found.

Rebooted to W7 repair tool.
Command prompt.

C:\ dir
no files nor folders

D:\ dir
files & folders are present

X:bootrec /scanos
NO Windows Installations found

X:bootrec /fixmbr
X:bootrec /fixboot
X:bootrec /rebuildbcd

Same problem

Rebooted to W7 repair tool.
Command prompt.
X:bootrec /scanos
NO Windows Installations found

No Joy

Rebooted to W7 repair tool.
Command prompt.

c:bootrec /fixmbr
c:bootrec /fixboot
c:bootrec /rebuildbcd

Same problem

Rebooted to W7 repair tool.
Command prompt.
X:... Read more

A:[SOLVED] W7 system partition drive letter changed won't boot

Hi, boot to the RE (repair your computer) at the x:\sources prompt type:-

bcdedit (press enter) this will reveal the boot manager and the boot loader that your OS uses to boot. Note down the entries, next type:-

bcdedit | find "osdevice" (press enter) this tells us what drive letter the RE has assigned the OS, not always C:

It will be this drive letter that you will need to use to repair the boot .

Read other 19 answers

Hi, I have an Asus n61 notebook & a 1tb WD external drive connected via esata. I want my notebook to recognize the drive as G, for program pathway reasons, but as it needs to be connected before power up my system sees it as F. When I try to 'change drive letter' in Disk Management it simply says 'the parameter is incorrect'. I have never had problems assigning drive letters in XP. What is the secret in W7?

A:Can't change drive letter for external drive

Read other 10 answers

I have Windows 7 installed on an SSD 128 GB drive but I'm upgrading the drive to an SSD 256 GB. But at the same time I want to keep the newly installed drive letter as C: like the old one so I can use "C: only" software.

My present hard drives are:

Primary Windows 7 128GB SSD - labeled C:
ASUS DVD Optical - labeled D:
WD 1TB Internal Storage - labeled E:
Seagate 800GB External Storage - labeled F:

When I tried to reboot with the new drive plugged in, Windows 7 recognized the system image from my internal storage E: drive but in the System Recovery Options menu, the storage's letter suddenly changed to C:...

How do I keep the NEW 256GB installed drive as C:? Is it possible to change the primary drive letter in Windows 7 Disk Management back to C: after a primary SSD drive switch and system image recovery?

A:Want to change Primary SSD drive but keep Drive letter at C:

Robinsongs, welcome to the windows 7 forum.

If you install the new ssd in your d slot after restoring your image to the SSD, your bios will normally allow you to
select the boot drive. which you can select as the new SSD.

I would remove the old C drive and place the new ssd in the old C slot. Should be ok.

This way when you boot your machine the bios should automatically boot from your new ssd.
If you have restored your old c image to the new ssd properly.

Bios normally allows you to select boot devices.


Read other 3 answers