Date: Sun, 7 Feb 1999 12:24:23 -0700 (MST) From: "Kenneth D. Merry" <ken@plutotech.com> To: mike@smith.net.au (Mike Smith) Cc: daren@sefcik.cc, obrien@NUXI.com, freebsd-current@FreeBSD.ORG, freebsd-scsi@FreeBSD.ORG Subject: Re: low level format--how?? Message-ID: <199902071924.MAA63805@panzer.plutotech.com> In-Reply-To: <199902071815.KAA06425@dingo.cdrom.com> from Mike Smith at "Feb 7, 1999 10:15:16 am"
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Mike Smith wrote... > > Thanks..I ended up just pulling my old Atari out of the closet and doing > > the format on it...that seemed to work and I am now up and running. I > > would still like to know how to do it under FreeBSD. > > If the disk wasn't being probed, then you can't format it, period. That only applies if the passthrough driver didn't probe it. The passthrough driver will attach if the device responds to an inquiry. My guess is that the pass driver did attach in his case, but the da driver did not. I've seen this before with other drives that ended up needing a low-level format. In order for the da driver to attach, the read capacity it does must succeed, or fail with an acceptable "medium not present" type error code. > It sounds to me like you managed to screw the disk up, and the process > of pulling it and reinstalling it in your Atari gave it a chance to > recover. > > Rule 1: Never change more than one variable at one time. Good idea. > The correct answer to "how do you low-level format a SCSI disk under > FreeBSD" is "if you have to ask, you SHOULD NOT be doing it". It is > almost never the right thing to do. In his case, I think it was. The "medium format corrupted" error message can generally be fixed by low-level formatting the disk. But you're right, low-level formatting the disk is often the wrong thing to do. > > Daren > > > > > > > > On Sat, 6 Feb 1999, David O'Brien wrote: > > > > > You will get more mileage by discussing this type of thing on > > > freebsd-scsi@freebsd.org > > > > > > > > > > > Is there ``/sbin/scsiformat''? Or may be you have to use camcontrol now? > > > > > > > > rover# camcontrol defects -f da0 > > > > camcontrol: cam_lookup_pass: CAMGETPASSTHRU ioctl failed > > > > cam_lookup_pass: No such file or directory > > > > cam_lookup_pass: either the pass driver isn't in your kernel > > > > cam_lookup_pass: or da0 doesn't exist > > > > rover# camcontrol defects -f /dev/da0 > > > > camcontrol: cam_lookup_pass: CAMGETPASSTHRU ioctl failed > > > > cam_lookup_pass: No such file or directory > > > > cam_lookup_pass: either the pass driver isn't in your kernel > > > > cam_lookup_pass: or da0 doesn't exist > > > > rover# > > > > > > -- > > > -- David (obrien@NUXI.com -or- obrien@FreeBSD.org) > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-current" in the body of the message > > > > -- > \\ Sometimes you're ahead, \\ Mike Smith > \\ sometimes you're behind. \\ mike@smith.net.au > \\ The race is long, and in the \\ msmith@freebsd.org > \\ end it's only with yourself. \\ msmith@cdrom.com > Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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