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Windows 7: less theoretical amount of D capacity than actual !

04 Dec 2012   #11

Windows 7 Ultimate x64

Quote   Quote: Originally Posted by techno di View Post
Quote   Quote: Originally Posted by Alejandro85 View Post
Make sure you have hidden files visible on explorer options. The difference may be due to those files being stored somewhere.
Often Windows creates the hidden folder "system volume information" that contains the system restore data, which can take quite a big amount of space.
that is what i dont know , if the hidden files are not included in this simple way of calculation .... you may be right
What Windows calculates is the total size of whatever you selected only, but if hidden files are........ hidden, you can't select them so never will be counted (and Windows by default does NOT show them).
Anyway, it's easy to prove. In explorer go to Tools menu => Folder options => View tab => select "show hidden folder and files", and also untick "hide protected system files" => accept. Immediatly all hidden files should become visible if they exist, then repeat your test to see if the missing space appeared.

My System SpecsSystem Spec
05 Dec 2012   #12

Windows 7 Ultimate x64/Windows 8.1 Pro x64

Have you deleted files since you put stuff on it? [Recycling bin]
Does Windows use that drive for swap space? [Swap file]

Did you adjust your numbers for the manufactures rounding? [250 Gigs formats to 232 Gigs]
Did you calculate the space for the NTFS ver of the FAT? [See above]
My System SpecsSystem Spec

 less theoretical amount of D capacity than actual !

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