Re: [CentOS] grub problems
m.r...@5-cent.us m.r...@5-cent.us wrote: This is irritating: I've got a server I just upgraded to 5.4, then rebooted, only to discover that it just *sits* there at the grub boot menu. I looked at grub.conf, and uncommented hiddenmenu (which should have been done long ago). I just saw something similar happen on a server when I was upgrading it to kernel 2.6.18-164.2.1.el5xen. In this case, however, it didn't get to the grub prompt but rather only got as far as printing GRUB and nothing else. This was on a machine that was originally CentOS 5.3 and was previously upgraded to 5.4. In this case, I had mirrored OS disks so I was able get into the BIOS, and boot from the second disk (which had been previously been set up with a redundant boot block). I then reinitialized the boot block on the first disk (and is the default boot device). If I didn't have mirrored disks, I would have booted the DVD in rescue mode. Both the initial grub setup and the reinit were done according to the info available at http://grub.enbug.org/MirroringRAID. Hopefully that helps. Devin -- UNIX is very simple, but it takes a genius to understand the simplicity. - Dennis Ritchie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] grub problems
On Wednesday 28 October 2009 15:47, m.r...@5-cent.us wrote: This is irritating: I've got a server I just upgraded to 5.4, then rebooted, only to discover that it just *sits* there at the grub boot menu. I looked at grub.conf, and uncommented hiddenmenu (which should have been done long ago). It *still* sits there when I reboot. Any clues, folks? mark grub.conf: #boot=/dev/sda default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-164.2.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.2.1.el5 ro root=LABEL=/ rhgb initrd /initrd-2.6.18-164.2.1.el5.img title CentOS (2.6.18-164.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.el5 ro root=LABEL=/ rhgb initrd /initrd-2.6.18-164.el5.img snip ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Looks OK. Can you boot this system at all? Have you tried to boot yhe old kernel, maybe there is an issue with the new one? If you cannot boot ayt all try a live CD and check the log files for a clue. -- Regards Robert Linux User #296285 http://counter.li.org ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] grub problems
On Wed, 28 Oct 2009, m.r...@5-cent.us wrote: This is irritating: I've got a server I just upgraded to 5.4, then rebooted, only to discover that it just *sits* there at the grub boot menu. I looked at grub.conf, and uncommented hiddenmenu (which should have been done long ago). It *still* sits there when I reboot. Any clues, folks? mark grub.conf: #boot=/dev/sda default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-164.2.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.2.1.el5 ro root=LABEL=/ rhgb initrd /initrd-2.6.18-164.2.1.el5.img title CentOS (2.6.18-164.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.el5 ro root=LABEL=/ rhgb initrd /initrd-2.6.18-164.el5.img snip Try labelling root as the actual drive, not using the LABEL as above. In other words, something like this: root=/dev/VolGroup00/LogVol00 rhgb quiet Otherwise, your grub.conf is exactly like mine, and it works without issue here. *** Gilbert Sebenste (My opinions only!) ** *** ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] grub problems
On Wed, 28 Oct 2009, m.r...@5-cent.us wrote: This is irritating: I've got a server I just upgraded to 5.4, then rebooted, only to discover that it just *sits* there at the grub boot menu. I looked at grub.conf, and uncommented hiddenmenu (which should have been done long ago). It *still* sits there when I reboot. Any clues, folks? snip Try labelling root as the actual drive, not using the LABEL as above. In other words, something like this: root=/dev/VolGroup00/LogVol00 rhgb quiet Otherwise, your grub.conf is exactly like mine, and it works without issue here. Just tried, no joy: *still* sits at the chosen menu item. And yeah, it's identical to our other systems. It's as though grub isn't seeing hiddenmenu. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] grub problems
m.r...@5-cent.us wrote: This is irritating: I've got a server I just upgraded to 5.4, then rebooted, only to discover that it just *sits* there at the grub boot menu. I looked at grub.conf, and uncommented hiddenmenu (which should have been done long ago). It *still* sits there when I reboot. Any clues, folks? Anyone sitting at the keyboard holding a key down? I ran into a really annoying bug in the latest Dell DRAC cards for example which caused the management card to spew crap onto the console causing the grub boot loader to hang at the menu screen(as if someone hit a key to cancel the timeout). Lots of other side effects to that bug as well(on a couple of occasions would have almost everything get zombied out until I rebooted the management card which cleared it up). nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] grub problems
m.r...@5-cent.us wrote: This is irritating: I've got a server I just upgraded to 5.4, then rebooted, only to discover that it just *sits* there at the grub boot menu. I looked at grub.conf, and uncommented hiddenmenu (which should have been done long ago). It *still* sits there when I reboot. Any clues, folks? Anyone sitting at the keyboard holding a key down? Nope. It's part of a cluster, the head node, and it's in a machine room, nobody there. mark time to worry 'bout it tomorrow ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
