5.25" Floppy disk drive not recognized

[Jin Guojun[VFF]]

On 08/14/20 09:34, Tomasz CEDRO wrote:
> On Fri, Aug 14, 2020 at 6:14 PM Don Wilde wrote:
>> On 8/14/20 8:45 AM, Tomasz CEDRO wrote:
>>> Is floppy drive still available? Was it supposed to be removed..?
>> It's still in the GENERIC kernel configuration. Disk Doctors, if you
>> have one local, should be able to tell you whether the diskette itself
>> is readable and formatted.
> Good news, thank you :-) There was a discussion somewhere around 2017
> to remove it.. I am glad floppies are still here and will stay here
> :-) I am fan of retro computers and this may come handy :-)
>
> https://lists.freebsd.org/pipermail/freebsd-arch/2017-December/018681.html
>
We still have it :-)

# mount_msdosfs -o ro /dev/fd0 /mnt
# ll /mnt
total 2131
drwxr-xr-x   1 root  wheel    7168 Dec 31  1979 ./
drwxr-xr-x  24 root  wheel    1024 Aug 14 10:50 ../
-rwxr-xr-x   1 root  wheel    6883 Dec 30  1993 ADDHELP.OV_*
-rwxr-xr-x   1 root  wheel   28962 Dec 30  1993 DBLSPACE.BI_*
-rwxr-xr-x   1 root  wheel     302 Dec 30  1993 DBLSPACE.SYS*
-rwxr-xr-x   1 root  wheel     744 Dec 30  1993 DOSUMB.CO_*
-rwxr-xr-x   1 root  wheel  175485 Dec 30  1993 IBMAVD.EX_*
-rwxr-xr-x   1 root  wheel   78253 Dec 30  1993 IBMAVSP.EX_*
...
# umount /mnt

--- change to a bad floppy disk

# dd if=/dev/zero of=/dev/fd0 bs=18k
dd: /dev/fd0: Input/output error
1+0 records in
0+0 records out
0 bytes transferred in 3.943048 secs (0 bytes/sec)
^C
# fdformat -f 1440 /dev/fd0
Format 1440K floppy `/dev/fd0'? (y/n): y
Processing EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE done.
Errors encountered:
Cyl Head Sect   Error
   0    0    1   no address mark in ID field
   0    1    1   no address mark in ID field
   1    0    1   no address mark in ID field
   1    1    1   no address mark in ID field
   2    0    1   no address mark in ID field
   2    1    1   no address mark in ID field
   3    0    1   no address mark in ID field
   3    1    1   no address mark in ID field
   4    0    1   no address mark in ID field
   4    1    1   no address mark in ID field
(Further errors not printed.)

# uname -a
FreeBSD f114 11.4-RELEASE FreeBSD 11.4-RELEASE #0: Sun Aug  9 23:48:49 
PDT 2020
     root at f114:/usr/src/sys/amd64/compile/MinMax  amd64