shouldn't matter what the OS or partition type is if you're running the app off the bootcd
Partly, certainly as far as the OS is concerned. However the partition type is important. Hirens is basically a Windows site and most of the tools are the same, so they are highly unlikely to work on a Linux file system partition.

The only one on his boot CD I know that will do the job is the one that I have already suggested: unstoppable copier.