The OS is eating a lot of space and still growing. Every Windows update copies the old files to the system restore area and to a folder in Windows, than replaces the original with a copy and saves that also in the $hf_mig folder. That's 1 copy turning to 4. SP3 was about 500 Mb. So that update alone eats 1.5 Gb.
You can clear the System Restore (System Information Volume folder)space by turning System Restore off and immediately on again. You can use ccleaner to delete the $NTUninstall folder in Windows or do it manually.
- turn off and on System Restore
- download ccleaner (free) and use it to clean what it finds
- then download treesize or clduw (both free) to analyze what's left
I have an older computer with two small hard drives installed. The master drive is 9.3 GB and the slave is 18.6 GB. (I used to have the larger drive as the master but it crashed and when I got it fixed I was advised to make the smaller drive the master.) Because the master drive is so small, whenever I install a new program, I always make sure to install it on the larger slave drive, which has over 5 GB of free space left on it.
I've tried to make sure the smaller master drive retains plenty of free space. Until recently my system information showed I had 1.7 GB of free space on the master drive. Lately though, for reasons I don't understand, I keep getting warnings that the free space on my hard drive is low, around only 200 MB. Of course, I do what I can to clear up space, but even so, suddenly I have only about 700 MB of free space on the master drive.
I compressed the drive to free up more space, and this brought it back up to about 1.5 GB of free space. Now again, this morning, I got a warning again that the hard drive free space is down to 200 MB, and that's with the drive compressed!
What gives?? I've run my anti-spyware and anti-virus programs, and they don't show any problems. What's eating up all the free space on my hard drive??