I am trying to safe some files on my harddrive, with knoppix 4.0, because win xp won't boot up cuz a file is missing or corrupted. But I am a total newbe on knoppix and linux. I have searched around the forum and tested a lot, but nothing has worked.

I have two harddrives one each 74gb and one extern USB 200gb disk. On the desktop in knoppix I can se, CD-ROM, Floppy, KNOPPIX.desktop, sda, sdb, sdc1 and trash.desktop. I can start and se the files in sdc1, that is the USB harddrive. But when I'm going to open the other harddrives, sda and sdb, it says that "Could not mount device. The reported error was: mount: I could not determine the filesystem type, and none was specified". I need to get files from the harddrive and move them to the USB drive so I can format the harddrive.

Is there someone that have any suggestion on what I can do to get the harddrives mounted?

Thanks!