The computer I'm working on says it has 13.6 GB of used disk and 309 MG of free. The Vaio case says it has a 120 GB hard disk. I deleted some programs but I haven't been able to delete enough to run defrag or check disk. Is there a program I can run from a flash drive that will help? Or perhaps one to transfer files to the other internal hd or an external one? Also system tools doesn't have backup listed.