I have SFV20z with SUse9 installed. mount /dev/fd0 and perform read/write test. Then, umount /dev/fd0 and everything OK.
From /var/adm/messages, the /dev/fd0 error messages is as follows:
I wonder why these following messages represents and if it is due to
floppy HW issue.

Dec 16 14:11:10 www kernel: hw_random: AMD768 system management I/O registers at 0x8000.
Dec 16 14:11:26 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 14:11:26 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 14:20:03 www kernel: hw_random: AMD768 system management I/O registers at 0x8000.
Dec 16 14:20:18 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 14:20:18 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 19:55:50 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 19:55:50 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 19:55:50 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 19:59:03 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 19:59:03 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 19:59:03 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 20:00:29 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 20:00:29 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 16 20:00:29 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 18 16:11:16 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 18 16:11:16 www kernel: end_request: I/O error, dev fd0, sector 0
Dec 18 16:11:16 www kernel: end_request: I/O error, dev fd0, sector 0

Hi,

It looks like a hardware problem to me, either drive or floppy disk related.
Your post seems to indicate that you have SuSE9 installed rather than Solaris though, so you might be better off posting in the relevant Linux distro forum.

Actually, looks like someone already posted a similar issue so maybe a quick search on LQ might help you sort this out too.

Cheers,
Steve