What's a "disb."?

Maybe one of the small Linux distributions is an idea. Knoppix has a live demo which boots from CD I think. If it finds the USB ports you can copy the files.

If his notebook is okay and he has enough free disk space you could also install a real Linux. It should only grab one of the partitions or create a new one out of the free disk space.

Or if he has a 2nd partition you can install another windows on the 2nd partition.