Damned computer!

I loaded Linux Mint on this beast awhile back... well, that's not strictly true. Anyway, I'm wanting to back-up my hard drive and do a fresh install of Mint, completely re-formatting the hard drive, but I can't seem to get it all. I used Clonezilla and only nabbed about a third of the disk. Unless I can get my s**t together on this machine, I might have a bit o' trouble gettin' ready for KublaCon.