Hi folks. Long story short, I purchased a 160 Gb classic like 3.5 years ago and maybe used it a dozen times. I ultimately ended up putting it back in its box and decided last night to try to restore and use it. Every time I try to restore it, I get the "Can't unmount disk" error once I intiate the restore through iTunes. I have also tried putting the iPod into Disk Mode and restoring it through iTunes that way. Finally, after getting frusturated, I tried to restore it through Disk Utility to no avail. Anyone have any suggestions? From my research it sounds like some data block segments may be going bad.... Oddly enough, I can still sync my entire music collection to the device but cannot restore it. Any guidance would be much appreciated....