I have installed Morrowind Overhaul and it works well. However, I find that each time when I exit game, my C drive space decreases. At first, my C drive has 8.7G empty space, however after I playing Morrowind for 4 hours, the C drive's empty space becomes 7.2G. So about 1.5G space disappears. I am sure that I do not install any other things.

Can anyone help me solve this problem?

It could be system restore making its backup file?

Could it be save game bloat?

could it be your http://en.wikipedia.org/wiki/Pagefile.sys increasing its size?

I have turn off the system automatically restore function and deleted all backup files.

I guess maybe it's the reason. Maybe it makes some temporary files when I play game. So I want to find where these files are and then delete them.

It's not a good idea to run a HDD with that little of space available, as a percentage of the drive.

My first goal would be to recover the space on the drive. While you turned off System Restore (bad idea really) you can adjust down how much space it takes (12% is the default), you can also reduce the size of your Temp Internet Files and your Recycle Bin, though those should only take up space as they are filled.

Sorry I don't know what it is...Can you explain more? THX