I found a bunch of old 5.25 disks in a drawer, and I’d like to have a look at their contents and save whatever could be worth to into some other storage.
I managed to find a pair of very old 5.25 360K drives, I cleaned them up and then I removed the 3.5 drive from my oldest PC (a 2004 Pentium based system) and replaced it with one of the two 5.25 drives.
Unfortunately, the BIOS options for the single A floppy drive do not include the 5.25/360K combo; the options are 5.25/1.2M, 3.5/720K, 3.5/1.44M and 3.5/2.88M.
I tried nonetheless with both WinXP and Linux, using 5.25/1.2M and 3.5/720K options, but all my attemps failed: WinXP does not see drive A at all, while with Linux the /dev/fd0 device seems to react as expected to the issued commands, but it always reports a “can’t read superblock” error.
Since I tested a dozen different disks having constantly the same error, I fear that the issue is due to the missing option in the BIOS; if this is the case, I assume there’s nothing I can do but find a 5.25/1.2M drive OR an even older PC whose BIOS supports 5.25/360K drives.
I’d like to have my analysis confirmed or proved wrong with suggestions about how to read those disks with the hardware at hand.
Thanks in advance to anybody who can help me!