5.25" Floppy disk drive not recognized

Christoph Kukulies kuku at kukulies.org
Fri Aug 14 10:50:54 UTC 2020

First problem was to recognize the 5.25“ drive from the BIOS.
This MB seems to only support one floppydrive. It comes with an ASUS branded point to point cable (one connector only).

At least I managed that FBSD now recognizes the drive:

fdc0: <floppy drive controller (FDE)> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fd0: <1200-KB 5.25" drive> on fdc0 drive 0

But when I’m trying to
d# dd if=/dev/fd0 of=fd_dump 
dd: /dev/fd0: Device not configured
0+0 records in
0+0 records out
0 bytes transferred in 0.000252 secs (0 bytes/sec)

Do I have to specify  special blocksize?


> Am 14.08.2020 um 10:57 schrieb Olivier <Olivier.Nicole at cs.ait.ac.th>:
> Christoph
>>> I’m trying to access a 5.25“ floppy disk drive if anyone here knowing what a „floppy“ disk drive is. :)
>>> MB is a ASRock939A790GMH
>>> I see the drive in the BIOS although I’m not sure if it is really „connected“.
>>> Anyway, the FreeBSD (12.1) boot doesn’t see the hardware at all.
> Launch any old live OS that still had support for floppies and migrate
> your data.
> You should be able to find old ditribution of some Linux, or even WinXP.
> Olivier

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