My friend bought a 1TB Seagate Freeagent Portable Harddrive over a year ago and uses it to backup his PCs and large MP3 collection. He said he couldn't access some files / folders on it and asked me to take a look. After several unsuccesfull attempts, he confirmed that all of his files on the HDD were backed up elsewhere and we did a Quick Reformat of the entire HDD. I tried to perform an Error Check, but it wouldn't complete successfully. I tried to copy his MP3 collection (about 700gig worth) and at about 250gig it said the drive was full and wouldn't allow me to copy anymore files / folders to it. I did another re-format and got the same results. I then ran the Seagate Seatools, unformatted the drive, repartitioned it, and tried again. Same results.

Anything else I can try before declaring it dead?