NTFS drives, so allowing you to access data on a windows PC that is corrupted.
Here's info on how knoppix might be useful in fixing windows problems
such as
Using Knoppix to Restore the Master Boot Record
Use Knoppix to Write Zeros to the Hard Drive
Using Knoppix to Fix File System Errors
https://www.brighthub.com/computing/linux/articles/64736.aspx
[old links no longer working}
Here's some other peoples experiences of using KNOPPIX to fix windows
http://digg.com/software/Fixing_Windows_with_Knoppix