HDD Regenerator 1.51  http://www.download-archiv.de/downloads/Systemprogramme/Dateimanagement/9693.sht ml
HDD Regenerator is a unique program for regeneration of physically damaged hard disk drives. It does not hide bad sectors, it really restores them!
Betriebssysteme:
Windows95 Windows98 WindowsME WindowsNT Windows2000 WindowsXP DOS
Shareware $59.95
 
How it works
 
Almost 60% of all hard drives damaged with bad sectors have an incorrectly magnetized disk surface. We have developed an algorithm which is used to repair damaged disk surfaces. This technology is hardware independent, it supports many types of hard drives and repairs damage that even low-level disk formatting cannot repair. As a result, previously unreadable information will be restored. Because of the way the repair is made, the existing information on the disk drive will not be affected!
 
Can the HDD Regenerator repair your drive?
 
Almost 60 % of damaged hard disks can be repaired by regeneration. You can always download free demo version and try to regenerate the first found bad sector. The main purpose of the unregistered demo version is to display a report which contains information about the possibility to regenerate the entire disk by means of the registered full version. If the first found bad sector has been successfully regenerated, you can buy the product to regenerate all bad sectors on your hard drive. If the first bad sector has NOT been successfully regenerated, then replace your hard disk drive as soon as possible.
 
Important notes
 
Since the program does not change the logical structure of a hard drive, the file system may still show some sectors marked earlier as 'bad', and other disk utilities such as Scandisk will detect logical bad sectors even though the disk has been successfully regenerated and is no longer damaged by physical bad sectors. If you want to remove these marks, repartition the hard disk drive.
 
Hier findet Ihr eine  Info und eine Testversion:
http://hdd-regenerator.softonic.de/ie/28853
kapi:        HDD REGENERATOR v1.5 - nu75d/yoh
download free demo version http://www.dposoft.net/regnow/hdd.html
 
Meine Meinung:
Festplatten hatten bislang eine Garantiezeit von 5 Jahren; ist also die Garantie bereits abgelaufen, so ist die Platte schon mal älter und die übliche Größe war seinerzeit um die 60 – 80 GB; hierfür nochmal 60 $ zu investieren bei angeblich bis zu 60 % reparablen Sektoren finde ich als eine unnütze Geldausgabe; man kann gut mit versteckten Sektoren einige Zeit leben, auch wenn die Platte dadurch etwas kleiner wird und investiere lieber dieses Geld in eine neue Festplatte mit Garantie.