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Re: Floppy access by dd fails for 2.6.26-rc2 to final, possibly even earlier
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From: Grant Coady
Subject:
Re: Floppy access by dd fails for 2.6.26-rc2 to final, possibly even earlier
Date: Wednesday, July 23, 2008 - 5:13 am
On Wed, 23 Jul 2008 13:17:58 +0200, Rene Herman <rene.herman@keyaccess.nl> wrote:
quoted text
>On 23-07-08 02:46, Gene Heskett wrote: > >> On Tuesday 22 July 2008, Wakko Warner wrote: >>> Gene Heskett wrote: >>>> I just been advised by private email that I an not the only one who has >>>> lost the use of his floppy drive via dd. The corresponder noted that he >>>> had a copy of DSL with a 2.4.something kernel, and his drive worked >>>> flawlessly while booted to DSL. >>>> >>>> So now there are at least 2 floppy users wandering in the wilderness >>>> looking for water. We need it to support 20 year old computers without a >>>> TCP stack or network cards. >>> I guess I'll chime in. I'm not sure this is the same problem or not, but my >>> Alpha AS1000a (EV56 5/400) has never successfully been able to read the >>> floppy. I always get garbage. The drive does work as I can use the RCU >>>from floppy from the Arc BIOS. >>> Linux sees this device as a 2.88mb floppy. It is a 1.44mb and the >>> information in the Arc BIOS is set to 1.44mb (I don't think it matters, I >>> boot from SRM, not sure how to set the floppy there) >>> >>> I also do not see any errors or other useful messages in the logs. >>> >> Neither do I. It registers as >> Jul 20 22:56:59 coyote kernel: [ 16.297661] Floppy drive(s): fd0 is 1.44M >> Jul 20 22:56:59 coyote kernel: [ 16.312758] FDC 0 is a post-1991 82077 >> >> >>> Jun 1 15:23:06 narf kernel: [4262383.309846] Floppy drive(s): fd0 is 2.88M >>> Jun 1 15:23:06 narf kernel: [4262383.324494] FDC 0 is a National >>> Semiconductor PC87306 >>> >>> I tried forcing to use a specific type: >>> Jun 1 16:21:38 narf kernel: [4194206.301784] floppy0: setting CMOS code to >>> 4 Jun 1 16:21:38 narf kernel: [4194206.301784] Floppy drive(s): fd0 is >>> 1.44M Jun 1 16:21:38 narf kernel: [4194206.314479] FDC 0 is a National >>> Semiconductor PC87306 >>> >>> But that failed even worse with errors on sector 0. (NOTE the floppy was >>> good) >> >> Glad to know I'm not the only one, there are 3 of us now. > >Am not reproducing on 2.6.26, so it's at least not just everyone. Normal >floppy works fine here: > >root@7ixe4:~# mkfs.minix /dev/fd0 >480 inodes >1440 blocks >Firstdatazone=19 (19) >Zonesize=1024 >Maxsize=268966912 > >root@7ixe4:~# mount /dev/fd0 /mnt/floppy >root@7ixe4:~# echo BAR >/mnt/floppy/FOO >root@7ixe4:~# umount /mnt/floppy >root@7ixe4:~# dd if=/dev/fd0 of=floppy.img >2880+0 records in >2880+0 records out >1474560 bytes (1.5 MB) copied, 48.1893 s, 30.6 kB/s >root@7ixe4:~# mount -o loop floppy.img /mnt/floppy >root@7ixe4:~# cat /mnt/floppy/FOO >BAR >root@7ixe4:~# umount /mnt/floppy >root@7ixe4:~# dd if=floppy.img of=/dev/fd0 >2880+0 records in >2880+0 records out >1474560 bytes (1.5 MB) copied, 99.3359 s, 14.8 kB/s >root@7ixe4:~# mount /dev/fd0 /mnt/floppy >root@7ixe4:~# cat /mnt/floppy/FOO >BAR
Works here for ext2 and msdos, but I'm running on the linux box used to test. Grant.
quoted text
> >Rene.
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Messages in current thread:
Floppy access by dd fails for 2.6.26-rc2 to final, possibl ...
, Gene Heskett
, (Tue Jul 22, 5:41 am)
Re: Floppy access by dd fails for 2.6.26-rc2 to final, pos ...
, Wakko Warner
, (Tue Jul 22, 9:40 am)
Re: Floppy access by dd fails for 2.6.26-rc2 to final, pos ...
, Gene Heskett
, (Tue Jul 22, 5:46 pm)
Re: Floppy access by dd fails for 2.6.26-rc2 to final, pos ...
, Rene Herman
, (Wed Jul 23, 4:17 am)
Re: Floppy access by dd fails for 2.6.26-rc2 to final, pos ...
, Grant Coady
, (Wed Jul 23, 5:13 am)
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