Date: Sun, 26 Jan 2003 12:12:20 -0600 From: Mike Meyer <mwm-dated-1044036740.608dca@mired.org> To: questions@freebsd.org Subject: Re: Boot loader failing? Message-ID: <15924.9476.198244.492305@guru.mired.org> In-Reply-To: <15900.61276.547261.348182@guru.mired.org> References: <15900.61276.547261.348182@guru.mired.org>
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I know, it's poor form to followup to my own post, but I solved the problem and wanted to get the solution into the archives. In <15900.61276.547261.348182@guru.mired.org>, Mike Meyer <mwm@mired.org> typed: > I have a test machine that boots a number of things, FreeBSD -stable > and -current among them. I tried installing the latest 5.0 CDs, and > that failed miserably (the install process insist you have a swap, but > can't find the one I use on ad0s6c). So I rebooted the system to go > back to -stable. > > It failed to come up. Since this box runs a variety of OS's, including > two different FreeBSDs, I use grub to boot it. It loaded the grub > stage2 boot and then went to the grub command prompt. Trying to run > the boot by hand - via "root (hd0,1,a)" - gets the message "no such > partition". When I ask grub for a list of partitions, it lists the two > FreeBSD partitions, but says it can't find "sub-partitions" for them. > > I can boot FreeBSD-stable - I haven't tried -current - as if it were > Windows: make the FreeBSD partition the active partition and run the > standard MBR. > > I tried installing boot0. It lists the XP partition and the two > FreeBSD partitions (so much for Linux). Asking it to boot the two > FreeBSD partitions results in beeps. It boots XP just fine - which > means that entry is slightly more useful than the FreeBSD entries. > > I tried getting the latest version of grub, but that's a no go. I can > boot it off the floppy, but it doesn't see sub-partitions either. > > If I boot -stable from grub as described above, everything comes up > and works fine. I can even mount the -current partion and see that > everything is as it should be. But neither boot loader seems to work. > > Clues? Hints? Request for more information? Help? The 5.0 install process overwrote the disklabels. The only data it changed was the FS type on the partitions - they were all tagged as unused. So the various boot loaders can no longer find a partition that is in use. Fixing that with disklabel solved the problem. <mike -- Mike Meyer <mwm@mired.org> http://www.mired.org/consulting.html Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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