Date: Wed, 22 Dec 2004 18:22:24 -0600 (CST) From: <wbwither@bobball.uchicago.edu> To: <freebsd-questions@freebsd.org> Cc: weyrich_comp@yahoo.com Subject: Re: Identical hard drives, different disklabel sectors/cylinders Message-ID: <61196.65.182.75.133.1103761344.squirrel@bobball.uchicago.edu> In-Reply-To: <20041220160032.44668.qmail@web50703.mail.yahoo.com> References: <20041218233156.GA10895@bobball.uchicago.edu> <20041220160032.44668.qmail@web50703.mail.yahoo.com>
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Thanks for the responses. Sorry for the delay in replying. orville weyrich said: > (1) make sure that the BIOS settings are the same for > both drives. I don't think this is an issue, as I haven't touched the BIOS for this IDE card, and it should be on full-auto mode. > (2) is there a jumper on the drive itself that affects > sector mapping? No. > (3) do you have all the /dev/ad4 and /dev/ad5 devices > (try MAKEDEV ad) I MAKEDEV'd both ad4 and ad5 at least once. > (4) have you tried the > /stand/sysinstall->configure->label method of editing > the labels? Does it report a discrepancy between BIOS > and memory disk geometry? Yes, I tried /stand/sysinstall several times, and actually I can't remember whether it gave me that error. However, I have gotten that error many times in the past and was under the impression that it was a fairly normal thing and should be ignored. > (5) have you tried using disklable -e to directly edit > the labels to copy the "good" label to the "bad" > drive? Yes, I tried editing both labels, and it wouldn't take for either. Christian Hiris said: > Your disks slice tables holding different values for C/H/S geometry. > You can wipe out the slice tables with the dd(1) command and > re-initialize them with fdisk and bsdlabel or sysinstall. There is an > example written on this in 'man 8 bsdlabel'. I dd'd both drives several times. I never used bsdlabel, as I was under the impression that disklabel is more recent. > IMHO there is only one thing that can go wrong with your configuration: > If you are booting your system from the mirror, I would test if both > of your drives are bootable. Well, these disks are just extra storage under /var, and ad0 and ad1 are the bootable disks in this system. So I guess I don't have anything to worry about. Again, thanks for your help :)
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