Why is the Windows Image backup many times larger than the rest of the C:drive?

The Image under C:\Users\{userID}\WindowsImageBackup is many times larger than the sum of the other data on hard drive. I assume their must be versions of the image in here but I haven't a clue how I remove any.
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Try running ChkDsk to check your drive for errors. Right-click your Drive icon/ Properties/ Tools/ Error Checking.  Try it first by not checking either box (this will run it in a Read-only mode) to see if it flags any hard drive or file problems.  If it does, restart  it by ticking both boxes, and rerun it to allow it to attempt to fix any found problems.

Try it on all drives, internal and external.

An old article but still worth a read.

How to locate and correct disk space problems on NTFS volumes in Windows XP


What files you backup depends a lot on what options you set for the backup.  Left to its' own devices Windows 7 would probably backup every drive partition on your machine.

Back up and restore: frequently asked questions

What is a system image?

Back up your programs, system settings, and files

If your booting files are not on the same partition as Windows (for example dual boot systems) a system image might include two partitions every time it is created.


Personally I don't use Windows Backup or System Image, I prefer the more reliable tools found in third party programs.

I myself use software from Terabyte which has a proved track record when it comes to imaging, but also the restoration of such images.  Others  recommend software from Acronis.

Terabyte Unlimited


Acronis True Image 10 Home

Backup forum

Backup – Windows and Windows Server

Thank you.

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Lionel MMSmall Business IT ConsultantCommented:
If you are using Windows Backup its because it is storing more than just one days backup; depending on the type of backup you choose it will store the contents of drive c fully once and then continue to add to it--what it adds and how much depends on the type of backup you choose.

Its also a HUGE risk to store you backups on Drive C--you should put it on a different drive so that is the main drive goes down you can access a backup file on a drive that did not crash/die. Backup onto a second internal or an external drive.
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