Windows 10: Two virtually identical installations: C drive on one is 10GB larger

Discus and support Two virtually identical installations: C drive on one is 10GB larger in Windows 10 Support to solve the problem; This is probably too elementary for words, but it's puzzling me. I have two desktops with essentially the same software installed on both, both with... Discussion in 'Windows 10 Support' started by Wisewiz, May 4, 2021 at 3:37 AM.

  1. Wisewiz Win User

    Two virtually identical installations: C drive on one is 10GB larger


    This is probably too elementary for words, but it's puzzling me. I have two desktops with essentially the same software installed on both, both with two SSDs, both running the same build of W10 Pro 20H2. I never install software to C if I can help it -- D is my applications and utilities drive; F is storage -- so C has only Windows and the few apps that won't permit custom installation, but when I check File Explorer I find that C is 31GB on one computer and only 21 on the other. I've run through the folders on C on both to see whether I can find the heavy culprit, but nothing obvious shows up. I have no Windows.old on either computer. Page files sized the same (2,048) on both. Yeah, I know: 10GB is no big deal. But I sure would like to find that space-hog. Any ideas?

    :)
     
  2. Wisewiz Win User

    Two virtually identical installations: C drive on one is 10GB larger

    Thanks for responding, friends. I do, indeed run Disk Cleanup (plus System Files) once each week on both, and I have my System Restore files always down to just the most recent one. I let Google and Mozilla put Chrome and Firefox on C, but I watch and weed the accumulation of cache and cookie files frequently. Please keep the suggestions, coming, you wizards. I'm in a Sherlock Holmes frame of mind today.

    These are work computers, so no games, no photos, no vids, no music, fewer than 20 installed applications/utilities (same on each). Running bare bones for speed and functionality, but somebody stole 10 Gigs more of my main disk on one than
    Two virtually identical installations: C drive on one is 10GB larger [​IMG]

    Two virtually identical installations: C drive on one is 10GB larger [​IMG]
    on the other.
     
  3. Bree Win User
  4. Wisewiz Win User

    Two virtually identical installations: C drive on one is 10GB larger

    Two virtually identical installations: C drive on one is 10GB larger

    Gittin' 'er now. Back soon.

    Okay: Windows is 4GB larger and Program Files is 4GB larger on system A than on B. I'm sure I can figure out what the heavyweights are in program files, but I have no idea what to look for ---- wait, I bet I can use that tree program again to check just the Windows folder. Back soon.

    Well, that narrows it down. Why would SxS and Sys32 be significantly larger on one?

    Two virtually identical installations: C drive on one is 10GB larger [​IMG]

    Two virtually identical installations: C drive on one is 10GB larger [​IMG]


    - - - Updated - - -

    Okay, I used that little gem of a tree program (THANKS, Bree, it's a keeper!) to drill down and down and down, and what I've decided on the evidence is that I have no hogs; only a bunch of not-very-substantial piglets here and there, and they all add up to the 10 Gig difference between the two C drives. Given that the two machines are used slightly differently, and their record-keeping functions thus have different data, I am no longer either surprised or concerned.

    Many thanks to Navy and Bree (Dr. Watsons 1 & 2) for helping me to solve this case. Now back to Scotland yard.
     
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Two virtually identical installations: C drive on one is 10GB larger

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