I have been trying to read some floppies written on a HP 150 using fdutils (http://fdutils.linux.lu/) to configure the floppy controller. As I understand it the floppy has 70 tracks (10 are spares), 16 sectors, with 256 bytes per sector, single sided.
My lack of success in reading anything (not even the first track) may be due to age (the floppies are 20 years old), but I have managed to read some 5 1/4" floppies that are this old (presumably 3 1/2" floppies have similar aging characteristics).
Does anybody have any alternative ideas (yes I could go to a company that offer a copying service, but the contents are not that valuable).