
After you run it, run it again and click Clean Up System Files to get files that you need to be admin to delete. Disk Cleanup - It's amazing to me the number of people who DON'T run Disk Cleanup.The only thing, again is that you can't uninstall SP1.

In Vista there was a command line tool called "vsp1cln.exe" but in Windows 7 you can run Disk Cleanup and check "Service Pack Backup Files" and get back almost a gig of space. After a few months with the Service Pack, I've decided for myself that it's a good thing and decided I don't need the option. Clean up after Windows 7 SP1 (Service Pack 1) - After you install Windows 7 SP1, it leaves around the original files so you can uninstall the Service Pack if you want.However, if you take a few minutes, read carefully and do even a few of these tips or just run Disk Cleanup, you'll get lots of space back.

Please read carefully and with all things you find on a random blog, be careful because you have no one to blame but yourself. I've got a 256 gig C: drive, but noticed that in the last week or so I'd had only 20 gigs free. This is an " updated for Windows 7" version of my popular original article Guide to Freeing up Disk Space under Windows Vista.
