I don't run an Apple. But in Windows I wouldn't trust a hard disk giving pending bad sectors and replace it by a new one. No risk for me. But you may like to try a repair. See http://support.apple.com/kb/HT1641 for that.
If it's a diskette or a USB stick (you didn't tell), I'd throw it away.
Hi, im running 10.6.2 and was wondering if and how is it possible to remove bad pending sectors, thnaks