> This is probably me. The cdrom can be mounted with settrans /cdrom > /hurd/isofs /dev/hd2 and I have managed to umount is by using settrans > -fg /cdrom followed by settrans -fg /dev/hd2, but I cannot remount it, > the error is bad superblock. Any ideas? Apt-cdrom cannot mount it > either. So we are stuck with dselect for F1 at least.
That second command is clearing the passive translator setting on /dev/hd2. So after that you need to reset it (i.e. what MAKEDEV hd2 does). You should use settrans -fga to clear the active translator (aka unmount) without changing the permanent setting on disk.

