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[Solved] C disk space lost ~50GB after uninstalling Visual Studio

Hi, my C disk mysteriously lost ~50GB. Any suggestions to restore that are very appreciated. Thanks a lot!

Before it happened:
My laptop runs Win7 64bit. About 80G of C disk (146G total, SSD) was occupied .

How it happened:
I tried to uninstall Visual Studio(Community Edition) to free some space (~10G), but instead of my gaining 10G, C disk is occupied more.
I thought it's because I didn't fully uninstall Visual Studio, so I went into control panel, diligently uninstalled a dozen of programs that came along with the Visual Studio. I stopped to check how much space is freed, but was surprised that I lost more space: 28G free out of 146G instead.

What I tried:
Disk cleanup. Not helping.
I tried restoring the system to a point before the uninstall. Except losing several programs installed after the restore point, nothing.
WinDirStat shows hibernate.sys and pagefile.sys only occupying ~15GB. Nothing weird.

Solution:
From <http://serverfault.com/questions/419709/whats-eating-my-drive-space-when-normal-files-hidden-system-doesnt-equal-t>
Admin-run cmd:
vssadmin List Shadows
vssadmin Delete Shadows

I need to check out what these 'Shadows' are, but have to reinstall the programs lost in the system restore first...
2 answers Last reply Best Answer
More about disk space lost 50gb uninstalling visual studio
  1. Try running the SMART data for the drive (can use Defraggler). There may be bad sectors on the drive that are being remapped.
  2. Best answer
    http://www.jam-software.com/treesize_free/
    You can try this.
    Some times the problem is windows image. I think it created one after the UN-installation.

    How to delete those images
    http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/how-can-i-completely-delete-backup-system-images/349ee968-75b5-4dda-a8a3-a7c583f25007

    Don't forget to run tree file size in admin mode.
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