Roger Alcindor

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performing this clean-up could introduce any problems or loss of meaningful data ?
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NO.<br />
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I imagine restoration wouldn't reverse the disk clean-up ?
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CORRECT.
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if a disk cleanup causes loss of data, i'm sure MS would have lots of mails and Phone calls....
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McKnife

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you can use windirstat to check what's taking the space : <a href="https://windirstat.net/" rel="ugc">https://windirstat.net/</a>
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I checked the temporary files folders and couldn't account for the large amount of space reported by disk Clean-up. I proceeded with the clean-up and only about 40 GB had been recovered.<br />
This was the first time that I had used disk clean-up.<br />
thanks for your comments.
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Thanks for the update and I was happy to help
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I have windows 7 professional 64 bit and ran Windows disk clean-up to see how much disk space I could free up.<br />
I was surprised that windows 7 reported that it could free up 326 GB of disk space by removing temporary files alone (not temporary internet files).<br />
Exactly what doe disk clean-up consider to be temporary files and is there any possibility that performing this clean-up could introduce any problems or loss of meaningful data ?<br />
The disk is a solid state 939 GB disk formatted with NTFS and currently has 640GB of used space.<br />
I have made a restore point but I imagine restoration wouldn't reverse the disk clean-up ?
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I have windows 7 professional 64 bit and ran Windows disk clean-up to see how much disk space I could free up.
I was surprised that windows 7 reported that it could free up 326 GB of disk space by removing temporary files alone (not temporary internet files).
Exactly what doe disk clean-up consider to be temporary files and is there any possibility that performing this clean-up could introduce any problems or loss of meaningful data ?
The disk is a solid state 939 GB disk formatted with NTFS and currently has 640GB of used space.
I have made a restore point but I imagine restoration wouldn't reverse the disk clean-up ?

Disk cleanup integrity

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.

Windows OS

Windows 7 is an operating system from Microsoft. Features include multi-touch support, a redesigned Windows Shell with a new taskbar, referred to as the Superbar, a home networking system called HomeGroup, and performance improvements.