All someone needs to do is break the knoppix DVD into 3 parts. Each part being below 2 Gb so I can download via Windows http

A friend used a torrent, md5 checked out okay so he copied to dvd for me but then I got it and md5 didn't match, corrupted files on dvd, only a few html files would and the others wouldn't. Qemu wouldn't even start. Can anyone recommend the best way to put knoppix onto DVD?

And after an image is burned to DVD can the md5 check still be performed on that disc?