Why do my computer directories, both in Linux 13 MATE and Windows 7 OS's (and GParted) indicate only 600GB total space, when my computer actually has 640GB? The computer advertised as 640GB, so when I first explored and saw a total of "600 GB," I thought there was false advertising, but thought, okay, I can live w/ 600 GB (but was sort of peeved.) Then, while installing Mint 13 MATE for a dual boot, I was customizing partitions and saw that a total of 640 GB was definitely showing up during MATE installation procedures. But now, everything adds up to only 600 GB again.
It seems that the 500 GB I allocated for the /home directory is now showing capacity for only 465 GB, which may be part of the problem. And, I am accounting for the WIN 7 hidden 25 GB recovery partition, which shows up in GParted.)
Probably a newbie question, but can somebody tell me what is going on? Are there hidden files unseen? Why is the /home directory so much less than I allocated? Any other information about this issue would be helpful.
My storage capacity should show 640 GB. Other specs: Core i5/Sandy B.64-bit/2430 M; 8G mem; DDR3; 5400 RPM (see signature).
Thank you for your time.