How do I delete Windows.old in Windows 7?

Posted by CRK on Super User See other posts from Super User or by CRK
Published on 2010-11-22T10:24:48Z Indexed on 2011/01/08 17:56 UTC
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windows-7

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delete

I used to run Windows 7 32 bit, but installed the 64 bit version because of a RAM upgrade. During the installation I got this message:

The partition you selected might contain files from a previous Windows installation. If it does, these files and folders will be moved to a folder named Windows.old. You will be able to access the information in Windows.old, but you will not be able to use your previous version of Windows.

The C:\ drive now has two (2) Windows folders:

Windows (15.3 GB)
Windows.old (15.7 GB)

screenshot showing windows.old folder

Don't see why I need the Windows.old taking over 15GB of space on my hard drive so I tried to delete it. It didn't work.

How can I safely delete this folder?

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