I've seen so many minor errors during a session load but the desktop will still load
that would have a lot of errors later
yet people swear it's me

cd drives , mainly slightly older ones, have a hard time coping with the large KNOPPIX file it has to read to load a desktop

are you trying to testdisk the knoppix disk ?
this is a boot screen option shown on F2 or F3 at initial boot screen