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I wonder if Windows 8 OS file size is smaller footprint when freshly installed? My hard disk needs a bit of cleaning? Does it work?

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By smaller footprint, do you mean files on a Windows 8 system take less space? Could be a different file system cluster size, though your question isn't very clear. –  Adambean Feb 22 '13 at 21:28
    
No, I don't mean the hard disk cluster size. I mean Windows-8 OS takes small size footprint? –  Phpdna Feb 22 '13 at 21:33
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Do you mean whether Windows 8 will take up less disk space right after a fresh installation, compared to when it's been used for some time? If so, then yes. That's true for any operating system, in fact. –  Indrek Feb 23 '13 at 13:12
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closed as not a real question by Dave M, Tanner, Dennis, TFM, Mokubai Feb 23 '13 at 10:54

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2 Answers

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Windows 8 uses the same default cluster sizes as Windoes 7 in every offically supported filesystem.

If you are asking if Windows 8 requires less disk space to install than Windows 7, no. It's larger. For home edition it's about 25% larger.

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..and larger as patches are added. –  mdpc Feb 22 '13 at 21:36
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Windows 8 includes a new option to delete replaced Windows Updates to reduce the size of the WinSxS folder. Run the disk cleanup wizzard and select the option "Windows Update cleanup":

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After the reboot the files are deleted from the WinSxS folder.

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After doing this, you can save a lot of HDD space and a reinstall is not necessary.

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