PROBLEM WITH HARD DISK

I HAVE 20 GB HARD DISK WHICH HAS MANY BAD SECTORS. SO WHEN I TRY TO ACCESS THAT HARD DISK IT OPENS VERY SLOWLY AND ALSO LEADS TO HIGH CPU USAGE. I HAVE SOFTWARE HDD REGENERATOR WHICH IS A GOOD SOFTWARE WHICH REGENERATES 60% OF THE BAD SECTORS TO FRESH SECTORS. BUT IT TAKES 1 AND HALF TO FULLY REGENERATE.IS THEIR ANY OTHER SOFTWARE THAT CAN FASTLY REGENERATE THE BAD SECTORS OF MY HARD DISK IN SAY ABOUT MAX OF 1 TO 2 HOURS.

PLEASE HELP ME OUT AS I REALLY WANT SOFTWARE.