I have a desktop machine running win 2k with sp3. The machine has a removeable hdd and a 20 GB HDD with the operating system on. I think the swap file was on the removable disk and has been corrupted. When the 20GB drive tries to boot up to win 2k it comes up with the message "Unknown Error, Bad Sectors" "Press CTRL+Alt+Del" to restart. I have tried putting in a separate HDD and booting up and this works. I attached the corrupted disk and the disk manager can see the corrupted disk and says it's Healthy. When you try to access the disk though it says cannot read disk.
Can anyone suggest a tool that will be low level enough to access the hard disk drive and recover about 15-20 mb of data that I haven't backed up. Any help would be much appreciated.