I lost 100 gigs of hard drive space in vista 64 bit

[tigersty1e]

So when I right-click the main drive, it says that 218 gigs of hard drive space is used.

But when I go into the hard drive and select everything in there, only 120 gigs of space is used.

Where is the other 100 gigs?

 

[AnonymouseUser]

System Restore hordes 15% of all partitions by default, is hidden, and is most likely the main culprit.

EDIT > Text

 

[C1]

On top of that add recycle bin (mine is set to 10% ) and page file.
There's nothing unusual going on. When I do this I show only 5.5GB used when the files are selected, but 15Gb used in drive properties. (My C partition is 24GB total)

 

[RapidSnail]

Right-click drive > Properties > Disk Cleanup > More Options > System Restore and Shadow Copies > Clean up...

 

[AdamK47]

That's one reason why I have system restore off and have everything deleted immediatly. Speeds things up and saves on space. I keep a backup of my disk, but have never had to restore from backup since installing Vista x64 back in January 07.