On Tuesday 2017-12-12 19:31, Mark Hounschell wrote:
El 2017-12-11 a las 09:12 +0100, Per Jessen escribió:
Paul Neuwirth wrote:
Hello group,
I have on several machines this problem: they are continously trying to=20 access the floppy drives. Two drives already defective, due to the=20 mechanic stress.
Try reversing the cable to the drive (pin 1 at the wrong side). At least that's what happened to mine... Now it apparently works.
The mainboard does not have a floppy controller, so I use an SCSI floppy drive, it is working with a floppy disk inserted.
A SCSI floppy-drive? Wow, I don't remember ever seeing one of those.
Me neither, didn't even know they existed. over USB, yes, I knew, but never handled one.
I've worked with SCSI floppies back in the early 90's. Not on PCs though. I doubt seriously that the Linux kernel knows how to handle these devices properly.
You say you have several machines doing this. Have you ever, on any Linux machine, actually been able to use these SCSI floppy drives?
Yes, it does work... one second... [1734685.977032] sd 0:0:3:0: [sdc] Spinning up disk... [1734686.988075] ...............................................................................................not responding... [1734786.379534] sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [1734786.379542] sd 0:0:3:0: [sdc] Sense Key : Not Ready [current] [1734786.379545] sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready, cause not reportable [1734786.476723] sd 0:0:3:0: [sdc] Spinning up disk... [1734787.488072] .............ready [1734800.372199] sd 0:0:3:0: [sdc] 2880 512-byte logical blocks: (1.47 MB/1.41 MiB) [1734800.373939] sd 0:0:3:0: [sdc] Write Protect is off [1734800.373944] sd 0:0:3:0: [sdc] Mode Sense: 37 88 00 08 [1734800.388515] sdc: detected capacity change from 0 to 1474560 [1734800.541066] sdc: # mount -t auto -vo ro /dev/sdc mnt mount: /dev/sdc mounted on /root/mnt. # mount /dev/sdc on /root/mnt type vfat (ro,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro) It is complete same behaviour also on USB floppy disk drives (those were the ones, which didn't survive. The SCSI floppy disk drive does not spin up without disk inserted. By the way I am looking for a cheap 5.25" SCSI FDD.. they exist, but are traded for horrific prices.. ;) without ISA and FDC I do not know how to get my old drives working..