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In Windows 7, after I deleted all of the system images that I backed up, the backup size shows 2.27 GB.

Also, in the manage space usage summary, the following is displayed:

Data file backup: 0 bytes

System image: 2.33 GB

I also deleted all of the restore points. The backup location is the D partition.

Why is the backup not empty, and how do I delete it?

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Why are you worried about 2.27GB. So I can help you, tell me the steps to bring this information up on my own machine, my guess system image cannot be "reset". – Ramhound Nov 3 '11 at 13:55
I think I figured out what the problem is. I need to delete shadow copies that are stored on D partition. – BlueSky Nov 3 '11 at 14:12
@BlueSky post that as an answer – Sathya Nov 4 '11 at 5:13

I figured it out.

I deleted shadow copies on partition D with disk cleanup.

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