two nights ago i started to get CRC errors on certain pieces of data; couldn't move, copy or play these files. i did a bit of web searching and found the suspected cause to be portions of these files were likely written to a bad sector of the hard drive. so, i moved over all the data i'd not already backed up, and as one of the solutions i'd found, i ran chkdsk /r from the CMD prompt to repair the bad sectors. i had to unmount the drive first (in the CMD window), and then it ran fine, checking 100% of the drive, and attempting to fix a dozen or so files. since it was a 500GB drive, i let it run over night. edit - assuming i get this thing back and running, should i trust it? or junk it? i rebooted and now, i can't access that drive. is there a way to 're-mount' this that i should know about? any ideas?