Seagate Seatools (先用該工具檢查一下)
http://www.seagate.com/support/seatools/B7a.html

Seagate Low level format FAQ : (如果你確定要將硬碟整個低階format...)
http://www.seagate.com/support/kb/d...llfmt_what.html
and the download page :
http://www.seagate.com/support/disc...rs/discwiz.html

Good luck.