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Hard Drive Space and Cluster Size

Q: Hard Drive Space and Cluster Size

Why is it that the computer does not show the full amount of space available on a hard drive that is empty?

For example, I have an 80gb drive and it said that I have 76.69gb available even when there was nothing on it! My 60gb drive says 57.27 is available. And when I partition them the partition sizes add up to those numbers. Where does the extra space go and why so much?

Also....when I partitioned it asked me what size I wanted my clusters...64k, 32k, 16k, 8k, 4k, etc. Now I understand that the smaller cluster size means less wasted space when files are saved but what is an optimum size or does it matter?

Preferred Solution: Hard Drive Space and Cluster Size

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A: Hard Drive Space and Cluster Size

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I went to SSDs on all of my computers some time back, but I still use WD RE4s and 2.5 inch WD Black HDDs for a variety of backup tasks and for storage in which the data will not be accessed for a period longer than is ideal to use a non-powered SSD for. On my Macs I am using El Capitan with OS X Journeled, GUID map, and FileVault 2 encryption. On my SP3 and desktop I am using NTFS with Win 10 64-bit Pro with BitLocker enabled on both machines. The OS and third party programs are currently up to date.

I've generally used ExFAT and the GPT partition map because it allows me to use it on all of my computers, and I have always used the default cluster size. However, I do not think the default size was the best decision for me because the size on disk is over TWICE the actual size.

If I am correct, the default Win 10 cluster size is 4k, and that going BELOW that is useful for the drives I have many smaller files on. Is this correct? Additionally, the smaller cluster size I go, the slower the drive will write, correct? Also, if so, how low do you advise going? I am still torn between reformatting outright or trying one of the programs that allows changes to a currently in-use drive. Any advice? Thanks!

A:Hard drive cluster size issues? Size on HDD over twice the actual size

For the a sector size of 4k to double your disk utilization you'd have to have a really tiny average file size. From your numbers shown the average size if I calculate it correct is 132kb (unless you have 1 massive file and 17,711 tiny ones) so a 4k size will make no difference.

You could check with TreeSize Free - it will tell you if you right click on the status bar and select it to be displayed.

EDIT - having checked the default for ExFat is 128k for drives over 32GB (https://support.microsoft.com/en-us/kb/140365) and when I tried to format an external USB drive that is what it picked. According to macbook - Reformat exFat with specific Device Block Size and Cluster Size - Ask Different OSX picks 128k also.

So if you had 128k as your cluster size minimum disk utilization would be 17,772 files * 128k = 2.17GB. So if all your files were just over this (say 132k which looks like your current average size) you would be using 4.44GB add a couple of big files and it could easily be 6GB.

I would check your average file sizes and also your current cluster size (you can use chkdsk as described in the AskDifferent link above).

The default is 4k for NTFS and I have always formatted ExFat as 4k also. Depending on your current setting reformatting 4k looks like a good idea.

As for how - copying the data elsewhere, formatting and then copying it back has to be the easiest, safest and most likely fastest way. You'll also get the disk defragmented automatical... Read more

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Hello All!

In the old days, Norton Utilities had a slack space analyzer that would show you what the optimal cluster size to slack space ratio should be based on your current disk usage.

Does anyone know of a current utility that will perform that same function?


A:Cluster Size vs Slack Space

The more clusters you have the slower the drive....is a few extra gigs worth it?

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I have a question in regards on how to format disk drive (NTFS) to cluster size 128kb or 256kb.

people talks about 64kb+ cluster size for a raid array, which isn't what I want. under disk management when formating two dynamic drives together to create raid 1 or raid 0 single volume, maximum is only 64kb.

is it possible to go above 64kb?

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I'm trying to summarize here. I Googled this topic and found bits and pieces about how to do it, but not all together at once.

Original Q & A:

Q: "I have system restore set with an unbound upper limit, is this going to cause any problems later?"

A: "It depends on whether you need the hard drive space that you set for it as it fills up. As the space you set fills up, older restore points will automatically be deleted to make room for the new ones, so you shouldn't have a problem at all."

Now, as for viewing or changing the allocated HD space for System Restore Points, the only thing I can find is doing it via command prompt.

I won't go into what the command prompt is or anything because anybody who is worried about the size of System Restore Points probably knows their way around the command prompt and the Registry as well.

Anyway, to sum it up:

At the command prompt (Admin), to see the currently allocated space type: vssadmin list ShadowStorage

As in:
C:\Windows\System32>vssadmin list ShadowStorage

You will get an output like this:
Used Shadow Copy Storage space: 1.291GB
Allocated Shadow Copy Storage space: 1.563GB
Maximum Shadow Copy Storage space: 11.25GB

Sizes you see listed as well as sizes you can enter are in KB, MB, GB, TB, and up.

As you can see, 1.29GB is currently in use on my system.

To change the amount of used HD space: (increase or decrease)

vssadmin Resize /For=C: /On=C: /MaxSize=4GB

Change the drive letters to ... Read more

A:Limit System Restore Size/Hard Drive Space Low

I just paste this into cmd.

vssadmin Resize ShadowStorage /For=C: /On=C: /Maxsize=18GB

and to view what it is currently set at

vssadmin list shadowstorage /On=C:

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Hello everyone,

I installed Ubuntu 10.04 on my computer about 3 months ago, so i split my 500gb hard drive into 2 big partitions. But now i didn't feel the need for Ubuntu anymore, and decided to delete the partition. Now i have 173GB of free space on my hard drive that i want to put onto my C: drive where my windows partition is.

The problem is the c: drive will not give me the option to extend the partition, and i have no idea how to get that free space on to my windows C: partition.

If you guys could help, that would be great


Btw i have posted a picture of my disk management so you can see what it looks like currently

A:Increasing size of c: partition from free space on hard drive

Hello helldemon80, welcome to Seven Forums!

Have a look at Options One & Two in this tutorial at the link below to get an understanding of how to go about what you want to do, it will help you recover any space you need to recover.

As the C: is "System, Active" you would be able to recover into C: the "I: System" partition to the left of C: also.

Be sure to post back if you have further questions and to keep us informed.

Partition Wizard : Use the Bootable CD

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I'm running windows vista on a dell xps m1330. I've been trying to reduce the used space on my hard drive and locate what is using up most of it. It appears that the cause is my Itunes Music Folder. The first time i checked the size that the folder was, it said 97 GB. So I looked through it and the size of individual folders did not seem to add up. Then I checked the folder size again and it had changed to 47 GB. Does anybody have any idea what might be causing this?

A:Hard Drive Used Space (Itunes music folder keeps changing size???)

kamikazemike6 said:

I'm running windows vista on a dell xps m1330. I've been trying to reduce the used space on my hard drive and locate what is using up most of it. It appears that the cause is my Itunes Music Folder. The first time i checked the size that the folder was, it said 97 GB. So I looked through it and the size of individual folders did not seem to add up. Then I checked the folder size again and it had changed to 47 GB. Does anybody have any idea what might be causing this?Click to expand...

could be anything from deleted files that didnt get removed until reboot, to a back stored in the wrong place. we need more info

Ken J

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My drive is going bad, crkdsk is finding alot of errors on my drive. I have a program called spinrite will that restore and remove the errors? What program can I use to fix this or are all of them a waste of money?

Basically can a bad sector hard drive be fixed?

A:Best software to repair bad cluster on Hard Drive?

No it can`t, it`s a damaged part of the surface. I have a couple 1 TB drives with 1 bad sector on each.




run sfc /scannow

instructions are below

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1) When I create my partitions using the Windows 8.1 Setup Wizard, what cluster size does it put for my SSD?

2) How to check what cluster size I am currently on?

3) For SSDs, is it best to stick to the default 1024 cluster size or to manually create the partition using Disk Part and set it as 4096?

4) If your answer for 3 is to manually create them, what are the commands in Diskpart that I need to enter to have the 3 partitions ?

I only know the basic command:

create partition primary size=blablabla align=4096

A:Cluster Size for SSD

can you run chkdsk?
it should tell you current bytes in each allocation unit

An A-Z Index of the Windows CMD command line

Default cluster size for NTFS, FAT, and exFAT

Cluster sizes should be relevant to win 8. I think default is 4.

personally I use paragon partition software which enables me to make a boot drive on USB with its software. Boot to Paragon with no OS - Paragon Hard Disk Manager

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First of all, i'm not sure if this is the right section, so sorry if i made a mistake.

I intend to format my SEAGATE 1000/7200 (1TB size [actual size is 931GB, the *******s]). Using the builtin FORMAT function Windows asked me what cluster size i want to have. And i don't know. I am aware that the smallest is best for space management, but perhaps there are factors that i am unaware of.

Does anyone has any tips for me ?

Uploaded with ImageShack.us

(*) is "rabstads" :P

Domyślne = default
Bajt?w = bytes

Others should be obvious :P

A:Best Cluster Size

Just use the default.

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How do you set the default cluster size before installing XP? I hear that a default cluster size of 512 bytes will be beneficial. Does anyone know what other settings can be made before installing XP?

A:Cluster Size

Yes, you would use a third party program such as Partition Magic to format a drive with a specific cluster size. The Format command in XP can set a cluster size with the /A switch.
512 bytes a cluster is a good cluster size for most situations.

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How do you reset the cluster size for the HD ? OS, XP Home SP2



A:XP Home Cluster size

In the Disk Management snap-in, you can specify a cluster size, see:

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I just formatted my 250 GB HD into 5 partitions,basically around 50 GB each using Partition Magic and adjusted the cluster size to 16K. According to the prog, that comes out to about 2-3 percent wasted space in each drive. I am not really worried about the lost space because it is a large drive. I really just want to be able to access the info on these drives as fast as possible, but I would like to hear some peoples' opinions and experiences on exactly what cluster size would be correct for the quickest access with a minimal of waste. I realize there is a trade-off between speed and usable memory and I am leaning toward the speed side. What would be a good "middle-of-the-road"?

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how do i change clusters size on my c: windows 7 drive? any tool avail? both system file and C: drive file inside my hd.

A:change cluster size on my c:

You cannot change the cluster size when it is occupied with data. Why do you want to change the cluster size?

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I want to reformat and change my cluster size from 4kb to a larger size and also create two or more logical drives does anyone have the exact steps to do this for Windows XP here are drive specs: WDC WD1600SB-01KBA0
Performance Specifications 160 Gig
Rotational Speed 7,200 RPM (nominal)
Buffer Size 8 MB
Average Latency 4.20 ms (nominal)

Seek Times (Average)
Read Seek Time (Average) 8.9 ms
Track-To-Track Seek Time 2.0 ms (average)
Full Stroke Seek 21.0 ms (average)

Transfer Rates
Buffer To Host (Serial ATA) 2,400 Mbits/s (Max)
Buffer To Disk 748 Mbits/s (Max)

What would My best setup for this drive and windows XP be

A:Solved: Format and Cluster Size

Just curious .. why do you want to change the cluster size? Patrition Magic always tells me that 4k is the most efficent size to use?

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I have a usb and I want to give it a linux distribution

I continuity can this error from Rufus "Error; the selected cluster size is not valid for this device"

And I can't store things on my usb now ):

Could anyone help me??

I can not find anything on the official Rufus website and neither on other websites

I would appreciate help a lot

A:Solved: How do I change cluster size?


You shouldn't change cluster size; it will be set automatically.

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I am using my eight IDE 40 gig raid 0 drive array TOTAL of 320 gig with 1 partition of 320 gig to edit video. When low level formatting my array I can select many different cluster sizes to format this array to. Which cluster size would be best for video? I am using Windows XP pro with NTFS drive formating. Currently I am using a 1,024 cluster size and the system seems sluggish. My system uses Dual 2 gig Xeon processors with 1 gig ram on a SuperMicro board. Any information will be appriciated.

[email protected]

A:lowlevel format cluster size

A low-level format is a factory format in which track and sector information is written to the disc. You aren't low level formatting if there is already an existing filesystem, that is a high level format.

With a partition of that size I would suggest 4kb clusters for NTFS.

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I've been experimenting with EASEUS Partition Master Home Edition and a spare 500GB WD 5000AAKS external USB disk as part of my self education. Specifically, I've been experimenting with cluster sizes after reading this in the EASEUS help file:

EaseUS Partition Master Manual - Formatting Partitions with partition manager software, unformat hard drive with format recovery software.

The smaller cluster size is, the bigger file allocation table (FAT) will be. The bigger the FAT is, the slower the operation system works with the disk.

Perhaps I misunderstood, but does this imply that using a larger cluster size will cause the disk to be accessed faster?

To test this, I formatted the WD as NTFS using a 512 byte cluster size and then timed a copy of 3.1GB from my internal HDD to the WD USB drive. I repeated the exercise after formatting a second time using a 64KB cluster size.

These are the results:

512 byte cluster size : time for copy = 5min 50sec
64KB cluster size : time for copy = 6min 41sec

The result seems counter-intuitive given my understanding of the line from the help file. Have I misunderstood? What is the benefit of formatting using different cluster sizes? Why is there options to format using different cluster sizes?


A:Question about format cluster size

Good question. Did you copy one single 3.1GB file or many smaller files totaling 3.1GB? That would be an important difference.

Smaller files on a disk with a large cluster size will obviously use more space and I'm guessing that it would take longer to write them because there'll be much more padding at the end of such files in order to fill them up to multiples of the cluster size.

Example: your cluster size is 512 bytes. You write a roughly 17K file. No problem, as the file will occupy 34 or maybe 35 clusters and fit nearly perfectly.

With a cluster size of 64KB, you end up with the 17KB file occupying one cluster and the remaining 47KB having to be padded with zeroes by NTFS - slowing down the file transfer in the process.

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What is the default Cluster size setting when formatting a Windows NTFS Partition on a hard disk drive greater than 2GB ?

A:Default Cluster size for NTFS



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Hello guys, I have been reading up on cluster size and how it impacts performance on an NTFS partion. From what I understand, the default cluster size in windows XP is 4kb. I know that increasing the cluster size will improve performance but it will waste space. My question is what cluster size would be optimal for a strictly gaming PC? I am willing to bet that the data files that a game uses are larger than 4kb. I am thinking of raising the cluster size to 64kb.
Is this reasonable?

A:NTFS Cluster size question

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Is it possible to have two different partitions on the same HD with two different cluster sizes.

What I want to do is have 1 for the OS and one for storage.

I'm thinking
8KB/16KB OS Partition
128KB Media Storage

If so, would the OS be able to read from both.


A:Multiple Partition/Cluster Size Question

I don't believe they can be set independently. However, cluster size is irrelevant with larger HDD's. There's no reason to scavenge small amounts space when you have a HDD with gig's of free space.

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How is this done, as Diskeeper reports that it can only defrag. NTFS partitions with a maximum of 4K Cluster Size?

A:Defragmenting an NTFS partition with 64K Cluster size?

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The average file size will be around 8 MB. I may also have a single very large file (500MB).

A:Ideal cluster size for 1.5TB NTFS volume

Quote: Originally Posted by Cluent

The average file size will be around 8 MB. I may also have a single very large file (500MB).

When you format the drive, the optimal cluster size should be selected automatically, probably 4KB.

If you are offerred a choice, remember that the largest size is not always the most space efficient, although with 1.5T that is probably not a big deal.

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I'm in the process of migrating to a new laptop and want to determine if I currently have the optimal cluster sizes on my data partitions. I have separate partitions for music, ISO files, video, etc. (These are Extended/Logical partitions.) Obviously using the 4k default for video files makes no sense and I currently use 32k clusters for that partition - but it would be nice to obtain verification of my current cluster sizes.

Anyway, I'd like to find and use a program to perform an analysis of my HDD that would show the optimal cluster size to slack space ratio for each partition.

Anyone know of such a program? TIA, Rob

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I'm not sure if this should be posted in the Windows software forum or if the Hardware forum is appropriate so I'm starting here.

I recently purchased an external USB drive (WD My Book 160GB) as an external backup drive for my desktop. My question/issue is that Windows is reporting the available drive space at a value that is far less then the total size of the drive minus the sum of the drive space of the existing files on the drive.

For example, the My Book drive is 160GB. Using Windows Explorer I determined the amount of space the existing files & folders on the drive are using by right-clicking each file or folder in the root of teh drive and selecting 'Properties' and using the 'Size' and 'Size On Desk' values in the 'Properties' dialog. The sum of the 'Size On Disk' value of each folder in the root of the drive combined with the same for each file in the root equals 120GB (rounded to the nearest GB). According to the 'Properties' dialog for the drive (right-click the drive in Windows Explorer and select 'Properties') there is 15GB of available drive space.

120GB + 15GB = 135GB

What happened to 25GB of space on the drive?

I used Windows Disk Management to verify the drive space. According to Disk Managment the USB drive has a capacity of 149GB. This raises another question, what happened to 10GB of drive space? The thing is supposse to be 160GB and yet the capacity accoridng to Win... Read more

A:Available Drive Space < Drive Size - Sum of Existing Files

The short answer to there's two different measurement formats used. Decimal (GB) and binary (GiB) formats. Binary is used by Windows and decimal is used by the manufacturers. Both the manufacturer and Windows are giving you the "correct" number at about 149.
That explains some of it but honestly unless the external drive has a hidden partition, which is possible as some of them put on software to backup and also do a backup image file as well.

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I recently used my system image disk to restore on a new (larger) hard drive but now when I look at the hard drive from the computer view it shows my hard drive as being the same size as the old one instead of being the size of the new one. I'm not sure
I'm making much sense so I will post a picture...

Is there anyway to fix this? Does the drive really only have 286 gigs on it?

A:System Image disks installed on new hard drive show new hard drive same size as old one

You have to be logged in as Admin to perform these operations.
Go to Start, and in the Search box, type in DISK MANAGEMENT. Pick the Control Panel item "Create and format disk partitions." Once Disk Management comes up, right-click on the area of your disk and select "Extend volume..." Move it out
as far as you want, making the whole thing one drive.
If that doesn't work for you, then you can download Easeus Partition Manager Home
http://www.partition-tool.com/personal.htm  and create a boot CD from it that will accomplish the same thing (and more, if you want to read up on it). It's a free program and works
with 32- and 64-bit Windows. I like it and use it myself.

SC Tom

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How do I determine the cluster size that is from the Manufacturer of any hard disk drive (HD or SSD or External USB HD) (not the ones I can choose when reformatting but what the company that made the hard drive had hard-coded set when they made the drive -sector size)

-and no, I can't go to the hard drive website because some of them do not post this info.

I would like to reformat my usb external hard drives and my internal m.2 sata card back to the default manufacturer disk cluster size (allocation unit)

for example see pictures below..

A:Determine default Disk cluster size from manufacturer

The sector size is fixed by the drive itself and cannot be changed. It is usually 512 bytes.
The cluster size is some multiple of sector size. The default will be 4096 bytes except for very small drives under 2 GB. This can be changed but you need a good reason to do so. The default is almost always best. Hard drives themselves know nothing of cluster size which is a concept imposed by the file system. Nothing in the screenshots shows cluster size.

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Win XP Pro\Gigabyte GA7vaxp\2 WD800JBs

1st debate.........Is it possible to benefit from Microsoft's recommended "fat 32 cvtarea flagging of the master file table/ then ntfs convertion" for windows XP Pro setup......with only c:\ partition.......

"5-10% performance increase over standard XP installation"


and the optimum raid-0\ntfs cluster size ratio......i have been reading about.........(16/16 best?)
Microsoft's article describes the /A:8 Oformat option which aligns clusters into 4k boundaries........"Important: Because sectors are 512 bytes, the OFORMAT command must be used with the /A:8 option to create a FAT volume that can be efficiently converted to NTFS."...........(size 4k).......whole article seems to revolve around importance of 4k clusters.

1.What is max defragable ntfs cluster size

2.Can these "recommended" MFT optimization commands be modified to create larger than 4k clusters?

3.Do you have to choose one or the other? And if so, what is the best............ratio, ect.

4.This article confuses me even more......which claims promise fasttrak 100 runs best at 64k stripe size..........(but only benched with 4k ntfs clusters)


And Finally........Onboard Raid or Old Fasttrak 100 pci card?
Apparently they are both just software raid controllers......one and the same.

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I have an HP Envy 17 notebook. My notebook has 2 hard drive slots. It came with 2 500 GB HDD's. I decided to re vamp my laptop when I got it new. I put in a 40 GB SSD as my main drive. Desiganted as the C: Drive. I didnt have money for anything larger and I had my mind set on having a fast SSD instead of a normal HDD. I also put in a 320 GB Hard drive as the secondary drive. Its my E: Drive.

I also put in 8GB of Random Access memory. It came with 4GB. I then Installed Windows 7 Ultimate to my 40 GB SSD. I had about 7 GB left after installing. I just wanted a fast boot up. And I wanted Windows to run fast and smoothly.

Awhile later My SSD started having space disappear for no reason. I wasn't installing anything new on the drive, nor was I saving anything extra to it either. The extra 7 GB dwindled down to about 200 MB. Now my notebook is always running on low disk space. I have tried removing unwanted programs. I also tried clearing out cookies, history and my cache. Even tried removing system restore and shadow copies. And also tried the windows disk cleanup utility.

Does anyone know why my SSD started to have space magically vanish? I would like the space back. And can anyone give me any other ideas on how to free space on the drive? Any tips would be greatly appreciated.

A:Running out of hard drive space. Need info on how to clear up much needed space.

Probably windows updates that have been downloaded. 40GB is pretty small for Windows 7. You could running through the disk cleanup utility located in START>PROGRAMS>ACCESSORIES>SYSTEM TOOLS

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My solid state drive is half full of with and unknown CAB file (see attached WinDirStat report. I'm running out of space. I've disabled imaging and everything else that I can find to disable and have all data on my D drive which is setup with 2 drives 1 TB each for a total storage space of 1 TB. Your assistance is greatly appreciated! The attached screen shot from yesterday has the file size at 66.3 and today it is at 67.5. Looks like computer cancer.

Thanks so much for considering this.

A:running out of hard drive space. 67.5GB unknown CAB file wasted space

Hello and welcome to the forums, jjvvbb!

Your attachment(s) aren't visible to us.

Please reattach your WinDirStat report properly using this following guide:-

Screenshots and Files - Upload and Post in Seven Forums

Alternatively, you could also generate a screenshot of your WinDirStat window and upload it for our perusal using this guide:-


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How do I put the hard drive space used and free space on the Partition C: ? Partition D:\ and Partition E:\ has it but for some reason drive C:\ is missing it doesn't say how much space is used and how much space is free. The GBs are missing

A:How to bring back the amount of free space and used space on a hard drive

I'm a little confused about your question

You can't see how much drive space you have left when viewing your C drive via My Computer, or similar?

If you right-click on My Computer and select Manage, when the new window pops up click on Disk Management from the left hand side. What does that tell you about C drive? Assuming your C drive is actually a hard drive (and not a CD drive or something, though I have never heard of this happening and don't even know if it's possible to have C as your CD drive), you should see details at the top of the screen such as how much space you have left, by percentage of total capacity, as well as GB

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I'd like to run a batch file to check hard drive space on an XP computer, and if there is enough space available, then run some commands to create a directory to copy the files from remote server.

Read a text file with all the server ips
Run as service account
Verify that there is enough space on C:
Create a Install directory on remote server
Then copy the file from my computer remote server.

Can anybody please help me!!!

A:batch file to check hard drive space on an XP computer, and if there is enough space

I found this code on "SpiceWorks.com'.

I have not tested. I have not test (just to be clear). It's set up to determine % of free space (on a text file listing of servers) but could be modified to do what you want.

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My hard disk space is being wrongly calculated by my computer, and I would like to know why. The total amount of space (if I click on disk defragmenter) is 27.94 GB. I have noticed that over the last few months, I seem to be "losing" 1 MB per day without installing any new programs or saving stuff to the hard disk. Today, for instance, it indicated 15.09 GB - and when I turned on the PC again - also today, an hour later - it indicated 15.06 GB (which is what it is still indicating). I have not downloaded anything which could have lost me that amount of space. There is no bug or malware around either - I had my logs checked. My computer runs under Windows XP Home Service Pack 2 and IE 7. It's going to be four years old next month. Is this age-related? Is there any way to find out the TRUE size of my hard disk? Format is NTFS, by the way.

A:hard disk space wrongly calculated, size varies a lot between same-day sessions

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Loss of Important Files Due to a Disconnection of an External USB HD During Changing its Partition's Cluster Size On Onetouch 4


I have the Maxtor Onetouch 4 external USB harddisk of 500 GBs. It has two partitions, one is 15 GBs, and the other is the rest of the Harddisk's capacity which is I think 461 GBs. Here, I am speaking about the large partition which is Z.
The partition Z's cluster size is 4 KB, the factory setting. After it has become almost full, with nearly 410 GBs of video files, I have decided to change its cluster size to the maximum 64 KBs , because I belive that having the hardisk stuffed with large files (no less than 500 MBs ) makes it better to have a larger cluster size to ease the access of the files. To change cluster size, I used Paragon Partition Manager version 6, and I made sure it gave No warning regards the loss of the files or them getting corrupted.

During applying the cluster size change by Paragon, which was made under Windows XP Pro , SP3, where it wasnt necessary according to Paragon to restart the system to make the changes (because drive Z contains No operating systems ), I said, During applying the change, something happened to the USB connection between the Computer and the Onetouch 4 harddisk nearly in the middle of the process. I heard that sound that you hear when you plug out a usb device off the usb port in the PC, then, in a second, I he... Read more

A:Loss of Important Files (...) During Changing its Partition's Cluster Size

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Hello all,

I'm going to attempt to create a System Image for the first time with Windows Backup so when I need to reformat I can have the image handy.

My question is this, I'm using 64kb cluster-size on my install drive. Will using the System Tools disc to restore the System Image correctly restore the partition with the 64kb cluster size on its own?

Should I choose the "format and repartition" option if so, or leave it unchecked? What is the difference?

I've googled around and haven't found any discussion on this. Thank you for any input.

A:Restoring Windows Backup System Image & Cluster Size

My guess is that the image is independent of the clusters and you needn't be concerned with it---just as you don't have to be concerned about file systems when installation an application or saving a Word document. The image is just another file, regardless of the underlying file system.

Wait for another opinion--I've just made an educated guess.

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Hey guys,
I'm having a big problem with my hard drive space. First of all it keeps decreasing for no apparent reason when i am connected to the internet even though i'm not downloading anything. And i'm not talking about mb but GB!! My first guess was a vius so i ran my antivirus (avast) and removed some issues, but the trouble continues... I installed the WinDirStas as i saw in other posts to find if i missed something. And to my surprise i discovered that my HD is occupied by ~80GB of unaccessible files! I'm not sure i am saying that correctly so see for yourselves...

A:Hard drive space decreasing and showing less space available

I think you should read as 8 point 8... but you do need more overhead for Windows. Look at your pagefile settings in System and maybe have a look at what Windows Indexing settings are...

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When I click on it, it goes straight to drive D. also it will not be deleted .. How can I remove it without losing the files saved in my drive D?

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I have a HP Pavillion dm4 laptop with 2 GB RAM running Windows 7 and I am facing this problem. I have partioned the hard disk drive into C and D , C for Operating system files and D for Documents.

I tried to check how much space is there in C and it indicates only 2.9 GB is free of 50 GB C. but when I enter C drive and select all the folders and files, and click on properties, it shows total size of files on disk is 43 GB. so then I should be having free space of ~ 7 GB.

Now where the extra space go ? I dont understand this. And I enabled to view all the hidden files and folders, . Can someone help me out ?

A:C Drive shows less space than total size of all files

When windows downloads updates it creates restore points which is stored on the c drive. You might have made some your self at one time or another, these wouldn't show up because they are hidden. To clear these out you need to go in to control and then system. Click advanced settings and then click the system protection tab. You can clear out the restore points from there but keep in mind that you won't have any restore points so if anything goes wrong you won't have a restore point to go back to.

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My primary HDD was failing so I backed it up and replaced it with a larger 1TB drive.  After reinstalling everything the new drive is displaying the same size as my old drive and the extra space available is unallocated.  I can allocate it as
a separate drive but I find that annoying and would prefer to just have my primary C: drive show up with all of the available space.  I formatted the extra space and made it available separately as drive G hoping that I could EXPAND drive C but that option
is not highlighted as selectable on drive C for some reason.  Should I just live with this extra space or is there a way to easily combine C and the new G space?

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hi there..

my name is Anis...i just bought external hard drive 500gb...but after I formatted it..it's just about 400++ gb can be used..i would like to know..how to use the extra/reserve space for my ext hard disk?by any means, i want to fully use my 500gb space for the external...please help me...thank you...

A:How to fully use the extra hard disk space for external hard drive?

It should have about 465GB, what are you seeing?

You will not have 500GB due to the conversion between binary and decimal for reporting sizes.

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Hey guys I was wondering if it's possible to put in a 3 or 4 tb hard drive into my laptop. The current max it says in the manual is 1 TB, but it also says that for other laptops but is possible to upgrade. I have an m.2 nvme 256 gb and a crucial 750 GB SSD in it right now. They are GPT formatted and it does have uefi, so I don't think it'll be an issue. But I've read about HP limiting sizes in the BIOS.  And also I cannot find this type of connector cable anywhere or what it's called. I do have pictures of it though. Thank you http://s36.photobucket.com/user/ahsfisher/library/?view=recent

A:Hard drive size limit in BIOS? What connector is the drive

@djmagnum You're going to have a problem using any drive larger than 2TB because they have to be formatted GPT -- and unless your current drive is also formatted GPT, you will not be able to "clone" it onto the new drive due to formatting differences. Here's a thread that shows you how to check to see what formatting was used for your drive:  http://www.multibooters.com/guides/determine-if-hard-drive-is-mbr-or-gpt.htmlGood Luck

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I have a system and 3 internal hard drives.

The drvies are 120GB, 160GB, and 180GB but my system only recognizes 111GB, 149GB, and 167GB respectively. Tha tis about a 7% loss of space for each drive. 33 gigs lost in total. That's a lot of space.

None of the drives are partitioned and it's not and HP or other like system. It's a custom built PC. I only have an OS (WINXP) installed on my C drive (the 160 GB drive).

No matter how I connect these drives (on-borad IDE or IDE controller card) my system will not recognize the full space of any hard drive I install on my system.

The 120 is slave to the 160 and the 180 is on an ATA controller card (Promise Technologies) all by itself. All are Western Digital. The 180 is a special edition (and I recommend you stay away from WD special edition HDs. I have had to swap it for a refurb 3 times in 1.5 years. This is the first time I have installed it on a newer computer, though, so I hope it does not break like it did on my old, ancient system 3 times. My old system was and AMD 850 Duron with 128M RAM..but I digress).

So is there a way to get back this 33 gigs of missing HD space or is this just the way it is with WINXP?

Thanks in advance.

BTW, my MB is an ASUS P4P800SE with a Cerleron D 2.4MHz in case any of that matters.

A:7% of hard drive space lost on ALL hard drives...

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Hi guys, I am not sure why my hard drive C is smaller than hard drive D, It has been like this when I purchased this custom built PC, until right now I am having a hard time just to save space in drive C. and There is no way I can install any more program/software in drive C.
while for Drive D, I am using it to store personal file.

What I would like to do and to know is:
- Is my drive D a partition? Can I remove it? If I want remove it, will my hard drive C size become bigger?
- And how exactly I am going to remove the partition? what is the step and precaution that I have to take?

I have been looking for the solution everywhere, while there is many with similiar case. none has the exact situation like I do.
*I have attached some screenshot that might help.

A:HELP: Hard Drive C size smaller than Hard Drive D

Here's what I recommend:

first move the page file onto the C: drive (this might help, but it's not a proper tutorial.)

1. Shrink D: to half it's size.
2. create a new partition in the free space (call it B: )
3. copy the contents of D: to B:
4. delete partition D:
5. extend partition C: to take up the space that D: used to take.
6. Copy the content of B: to C:
7. delete partition B:
8. extend partition C: to take up the space that D: used to take.

I don't know why people insist on partitioning the main hard drive like this. And to sell it like that!
Your first image of Rapid Storage Technology does spook me a little bit. That could be a sign of a complication. However, it does not show a SSD. My best guess is the computer used to have a 40GB SSD that the system builder used for RST caching (incorrectly, if there's a 40GB partition on the HDD), which he took out before selling. In that case there shouldn't be a problem with the steps i outlined above.

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Hi everyone,
I installed Ubuntu on my computer a few months ago and created another partition for it on my 1TB hard drive.

I didn't really care for Ubuntu so I decided to delete the partition it was on.
That might have been a mistake.

Well, now there's 87.68GB of free space on my hard disk that I can't use and I don't know how to add it back to my c: partition.

There was another post about this a couple years ago, but I don't understand the instructions and am not actually sure if it worked. Can someone explain how to do this, please?

I'm not completely computer illiterate, but I'm not familiar with partitioning disks. It was just the one time with Ubuntu.

A:Hard drive partition: adding free space back to c: drive

The unallocated area is actually an empty extended partition. You need to delete that first.

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I want to format this 4tb sata hard disk drive into one or two partitions so can my wd tv live gen2 media player recognize it but it must formatted as MBR AND NOT AS GPT.

So is there any way to formatted into one and only Master Boot Partition at mbr and cluster size like 4k(Or something else) so it can recognize by any device i connect that hard disk drive(Media player, windows7 e.t.c.)


A:Hard disk mbr and cluster for 4tb

Hi there
Please explain why it MUST be an MBR and not a GPT drive .

If it's NOT the boot drive you don't have to have an EFI BIOS (UEFI) to use a GPT drive.

Unless you have special software the max size an MBR disk can be is 2.2TB

Once the disk is formatted (NTFS) standard programs will simply recognize it as a normal disk -- you can partition it into smaller partitions too.

So I'm confused as to why it MUST be an MBR Disk. !!!


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Hi Recently purchased a Maxtor 15.3 Gig HD. Installed it on a new system built by myself. Installed a full version of Win 98 and now the properties of the drive say that its a 14.2 Gig HD. I e-mailed Maxtor to aske where my extra gig went and they explained to me that windows calculates the size of drives differently than most of the Hard disk manufacturers and assured me that I have 15.3 gig of space. My question is how do I get Win 98 to display that it's a 15.3 gig drive and not a 14.3???
Thanks in advance

A:Hard Drive Size

Windows calculates your hard drive size differently than your manuf. While you do indeed have 15.3g space, Windows calculates space in gigs of 1024 squared, not 1,000,000 bytes, as your manuf does.
It amounts to the same amount of space, however.


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