Date: Fri, 12 Jan 2001 17:06:05 +1030 From: Greg Lehey <grog@lemis.com> To: Cary <scattered@babel.acu.edu> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: disklabel/newfs Message-ID: <20010112170605.K21945@wantadilla.lemis.com> In-Reply-To: <Pine.LNX.4.10.10101120103140.28834-100000@babel.acu.edu>; from scattered@babel.acu.edu on Fri, Jan 12, 2001 at 01:13:40AM -0600 References: <20010112162932.I21945@wantadilla.lemis.com> <Pine.LNX.4.10.10101120103140.28834-100000@babel.acu.edu>
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On Friday, 12 January 2001 at 1:13:40 -0600, Cary wrote: >>> Greg, thank you for the explanations. Below is the partition info you >>> requested: >>> >>> #disklabel -r /dev/da0 >>> [snip] >>> 3 partitions: >>> # size offset fstype [fsize bsize bps/cpg] >>> a: 247808 0 4.2BSD 0 0 0 # (Cyl. 0 - 120) >>> c: 247808 0 unused 0 0 # (Cyl. 0 - 120) >>> # >>> >> >> Hmm, I missed that this was an MO device. I'm wondering if there >> might be a problem with the medium, or the fact that you booted it >> without a medium in the drive. I'm not sure how to proceed from here, >> but here are some suggestions: >> >> 1. If practical, reboot with a medium in the drive. That will give >> us the information about what the system thinks the size is. >> >> 2. Otherwise (or just for the fun of it, anyway) try using dd to copy >> data from the medium: >> >> dd if=/dev/da0c of=/dev/null >> >> This will take forever, but at the end it will tell you how many >> sectors it read. > > OK, dmesg after reboot with MO media IN the drive! :) > > #dmesg > [snip] > da0 at ahc0 bus 0 target 0 lun 0 > da0: <RICOH RO-3012E 8.00> Removable Optical SCSI-2 device > da0: 5.000MB/s transfers (5.000MHz, offset 15) > da0: 121MB (248826 512 byte sectors: 64H 32S/T 121C) You don't say what dd did. > With this information, will I be able to format the disk with ufs, > or is there further digging I need to do? Hmm. Based on that, all looks well. You could try adding another partition with only 120 cylinders (245760 sectors): h: 245760 0 4.2BSD 0 0 0 # (Cyl. 0 - 120) > I tried to newfs the drive again, thinking that the OS might have > been fooled into thinking that it was just a normal drive: > > # newfs /dev/da0 > newfs: /dev/da0: `0' partition is unavailable No, I said before that's the wrong syntax. You need to give it a partition name. > # newfs /dev/da0a > newfs: /dev/da0a: Invalid argument Hmm. So it wasn't the lack of medium. > # newfs /dev/da0c > newfs: ioctl (GDINFO): Invalid argument > newfs: /dev/da0c: can't read disk label; disk type must be specified It needs to be a 4.2BSD partition. Greg -- When replying to this message, please copy the original recipients. If you don't, I may ignore the reply. For more information, see http://www.lemis.com/questions.html Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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