I had today really bad problem with my external hard drive. It is a external buffalo, while meaning to transfer files for friend's hard drive, it randomly stopped reading, and disappeared. There was several disturbing errors, what happened when reading files from the hard disk, some including random files (and every time different >.>) not reading... in end NONE of files reading untill rebooted. And this did not happen in windows only, when I even booted my trustworthy Ubuntu linux liveCD for file transfer, even it in the end failed and stopped reading the disk, and whole disk disappeared. I am really worried, as my hard drive space is that my main windows drive is 220 gigs, with 80 gigs free - Second internal drive being 700 gigs with 280 gigs free, and the external is 1Tb and includes 400+ gigs of data, that is more or less irreplaceable... Aside from windows' tools etc. is there any way to check and/make sure there is no trouble, and if is, maybe save or repair the drive?