Hi,
This morning one of my servers (centos 4.5) refused to boot. The console shows a lopp message grub loading stage2...
I've been able to boot from the install CD choosing the rescue option. I can chroot /mnt/sysimage with no problems and even started the services (network, mysql , httpd etc).
How can I solve this?
I've followed the manual ( http://www.gnu.org/software/grub/manual/html_node/Installing-GRUB-using-grub...) but now just keeps beeping with the GRUB fixed :)
I have 3 IDE disks, hda, hde and hdg. My /boot is a raid device /dev/md0 of /dev/(hda2,hde2,hdg2). cat /proc/mdstat shows all disks online and active in the array.
I have tried the grub-install --root-directory=boot --no-floppy hd0 (ou /dev/hda).
With the same results.
Ideas?
What's inside your grub.conf?
On 8/29/07, mbneto mbneto@gmail.com wrote:
Hi,
This morning one of my servers (centos 4.5) refused to boot. The console shows a lopp message grub loading stage2...
I've been able to boot from the install CD choosing the rescue option. I can chroot /mnt/sysimage with no problems and even started the services (network, mysql , httpd etc).
How can I solve this?
I've followed the manual (http://www.gnu.org/software/grub/manual/html_node/Installing-GRUB-using-grub... ) but now just keeps beeping with the GRUB fixed :)
I have 3 IDE disks, hda, hde and hdg. My /boot is a raid device /dev/md0 of /dev/(hda2,hde2,hdg2). cat /proc/mdstat shows all disks online and active in the array.
I have tried the grub-install --root-directory=boot --no-floppy hd0 (ou /dev/hda).
With the same results.
Ideas?
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
My grub.conf
default=1 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.9-55.0.2.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-55.0.2.ELsmp ro root=/dev/md1 initrd /initrd-2.6.9-55.0.2.ELsmp.img title CentOS (2.6.9-55.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-55.ELsmp ro root=/dev/md1 initrd /initrd-2.6.9-55.ELsmp.img title CentOS (2.6.9-42.0.10.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-42.0.10.ELsmp ro root=/dev/md1 initrd /initrd-2.6.9-42.0.10.ELsmp.img title CentOS (2.6.9-42.0.3.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-42.0.3.ELsmp ro root=/dev/md1 initrd /initrd-2.6.9-42.0.3.ELsmp.img title CentOS (2.6.9-42.0.2.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-42.0.2.ELsmp ro root=/dev/md1 initrd /initrd-2.6.9-42.0.2.ELsmp.img
My disks
Disk /dev/hda: 163.9 GB, 163928604672 bytes 255 heads, 63 sectors/track, 19929 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System /dev/hda1 * 1 13 104391 fd Linux raid autodetect /dev/hda2 14 6387 51199155 fd Linux raid autodetect /dev/hda3 6388 6452 522112+ 82 Linux swap /dev/hda4 6453 19929 108254002+ 5 Extended /dev/hda5 6453 19929 108253971 8e Linux LVM
Disk /dev/hde: 163.9 GB, 163928604672 bytes 255 heads, 63 sectors/track, 19929 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System /dev/hde1 * 1 13 104391 fd Linux raid autodetect /dev/hde2 14 6387 51199155 fd Linux raid autodetect /dev/hde3 6388 6452 522112+ 82 Linux swap /dev/hde4 6453 19929 108254002+ 5 Extended /dev/hde5 6453 19929 108253971 8e Linux LVM
Disk /dev/hdg: 163.9 GB, 163928604672 bytes 255 heads, 63 sectors/track, 19929 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System /dev/hdg1 1 13 104391 fd Linux raid autodetect /dev/hdg2 14 6387 51199155 fd Linux raid autodetect /dev/hdg3 6388 6452 522112+ 82 Linux swap /dev/hdg4 6453 19929 108254002+ 5 Extended /dev/hdg5 6453 19929 108253971 8e Linux LVM
Disk /dev/md0: 106 MB, 106823680 bytes 2 heads, 4 sectors/track, 26080 cylinders Units = cylinders of 8 * 512 = 4096 bytes
Device Boot Start End Blocks Id System
Disk /dev/md1: 104.8 GB, 104855502848 bytes 2 heads, 4 sectors/track, 25599488 cylinders Units = cylinders of 8 * 512 = 4096 bytes
On 8/29/07, mups. cp mups.cp@gmail.com wrote:
What's inside your grub.conf?
On 8/29/07, mbneto mbneto@gmail.com wrote:
Hi,
This morning one of my servers (centos 4.5) refused to boot. The
console
shows a lopp message grub loading stage2...
I've been able to boot from the install CD choosing the rescue
option. I
can chroot /mnt/sysimage with no problems and even started the services (network, mysql , httpd etc).
How can I solve this?
I've followed the manual (
http://www.gnu.org/software/grub/manual/html_node/Installing-GRUB-using-grub...
) but now just keeps beeping with the GRUB fixed :)
I have 3 IDE disks, hda, hde and hdg. My /boot is a raid device /dev/md0 of /dev/(hda2,hde2,hdg2). cat /proc/mdstat shows all disks online and active in the array.
I have tried the grub-install --root-directory=boot --no-floppy hd0 (ou /dev/hda).
With the same results.
Ideas?
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of mbneto
My grub.conf
default=1 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.9-55.0.2.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-55.0.2.ELsmp ro root=/dev/md1 initrd /initrd- 2.6.9-55.0.2.ELsmp.img title CentOS (2.6.9-55.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-55.ELsmp ro root=/dev/md1 initrd /initrd-2.6.9-55.ELsmp.img title CentOS (2.6.9-42.0.10.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-42.0.10.ELsmp ro root=/dev/md1 initrd /initrd-2.6.9-42.0.10.ELsmp.img title CentOS (2.6.9-42.0.3.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-42.0.3.ELsmp ro root=/dev/md1 initrd /initrd-2.6.9-42.0.3.ELsmp.img title CentOS (2.6.9-42.0.2.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-42.0.2.ELsmp ro root=/dev/md1 initrd /initrd-2.6.9-42.0.2.ELsmp.img
Can you boot into any of these?
My disks
<snip fdisk dumps look ok>
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Hi,
I can't boot. It simply does not show me the menu of kernels to choose.
When the problem first manisfested itselfFirst I was getting that loop regarding the 'loading stage2'.
After I tried that grub-install I simply get an infinite loop of beeps!
:(
On
Can you boot into any of these?
My disks
<snip fdisk dumps look ok>
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On Thu, 2007-08-30 at 10:05 -0400, mbneto wrote:
Hi,
I can't boot. It simply does not show me the menu of kernels to choose.
When the problem first manisfested itselfFirst I was getting that loop regarding the 'loading stage2'.
After I tried that grub-install I simply get an infinite loop of beeps!
I have seen problems similar to this when BIOS and running system see drives in a different order. Try making a GRUB boot floppy or CD, boot from it, and use the GRUB shell "find" command to see where it thinks things are located. See "info grub" for details. For example, if you have a /boot partition:
grub> find /grub/stage2
If you do not have a /boot partition:
grub> find /boot/grub/stage2
See if the above agrees with where your grub.conf file says the grub directory should be on the running system.
Unless the problem is a hardware failure, you should be able to boot from the grub shell by properly specifying root, kernel, and initrd lines with command-line completion for the latter two to point to desired vmlinuz-<version> and initrd-<version>.img files. Again, will need to include /boot on the path if you do not have a /boot partition, exclude it if you do. The BIOS and running system can usually be made to agree on device ordering by setting BIOS device ordering to match what the running system expects, and/or by changing the order things are seen via /etc/modprobe.conf. May also have to fix /boot/grub/device.map to match.
Phil
mbneto wrote:
Hi,
I can't boot. It simply does not show me the menu of kernels to choose.
When the problem first manisfested itselfFirst I was getting that loop regarding the 'loading stage2'.
After I tried that grub-install I simply get an infinite loop of beeps!
:(
Here is a set of steps that I distilled from how-to's that has worked for me. It might be worth a try.
Recovery from a screwed MBR (Install GRUB)
1. Boot with a rescue CD Go through the obligatory BS; network not needed 2. Once rescue finds Linux, hit OK. Do NOT do the chroot. Run grub. Then, from the prompt: a. If /boot is an integral part of the / partition: grub> find /boot/grub/stage1 -or- b. If /boot is in a separate partition: grub> find /grub/stage1 -in either case- Grub answers with drive and partition: (hd1,0) 3. Set the root for grub: grub> root (hd1,0) (or whatever returned above) 4. Write the MBR on the 1st drive grub> setup (hd0) (grub will print a bunch of crap, double-checking, and install itself.) 5. Remove the rescue CD and reboot.
When entering the values above, pay close attention to spaces and comma characters!
HTH.
On
Can you boot into any of these? > My disks > <snip fdisk dumps look ok> ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof. _______________________________________________ CentOS mailing list CentOS@centos.org <mailto:CentOS@centos.org> http://lists.centos.org/mailman/listinfo/centos
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Hi Robert,
I've tried that.
My /boot is located in a different partition than / so...
grub>find /grub/stage1 (hd0,0) (hd1,0) (hd2,0)
grub> root (hd0,0) <-- i've tried also the hd1,0 with the same results grub> setup (h0,0) checking if /boot/grub/stage1 exists...yes checking if /boot/grub/stage2 exists...yes checking if /boot/grub/e2fs_stage1_5 exists...yes Running embed /boot/grub/e2fs_stage1_5 (hd0) 16 sectors succeeded Running install /boot/grub/stage1 (hd0) (hd0)1+16p (hd1,0)/boot/grub/stage2 /boot/grub/grub.conf succeeded
But no luck with boot. Still a loop but this time nothing appears...
Recovery from a screwed MBR (Install GRUB)
- Boot with a rescue CD Go through the obligatory BS; network not needed
- Once rescue finds Linux, hit OK. Do NOT do the chroot. Run grub.
Then, from the prompt: a. If /boot is an integral part of the / partition: grub> find /boot/grub/stage1 -or- b. If /boot is in a separate partition: grub> find /grub/stage1 -in either case- Grub answers with drive and partition: (hd1,0) 3. Set the root for grub: grub> root (hd1,0) (or whatever returned above) 4. Write the MBR on the 1st drive grub> setup (hd0) (grub will print a bunch of crap, double-checking, and install itself.) 5. Remove the rescue CD and reboot.
When entering the values above, pay close attention to spaces and comma characters!
HTH.
On
Can you boot into any of these? > My disks > <snip fdisk dumps look ok>
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Mbneto wrote on Wed, 29 Aug 2007 14:36:49 -0400:
I have tried the grub-install --root-directory=boot --no-floppy hd0 (ou /dev/hda).
Did you already try a simple grub-install (hd0) where hd0 should be the disk that is used for booting and first in BIOS? And the grub.conf should reflect that you have a boot partition (assuming / is on /dev/md1): title CentOS (2.6.18-8.1.8.el5PAE) root (hd0,1) kernel /vmlinuz-2.6.18-8.1.8.el5PAE ro root=/dev/md1 initrd /initrd-2.6.18-8.1.8.el5PAE.img
Kai
Hi Kai,
I've sent my grub.conf in another post.
The grub-install hd0 did not work either.
On 8/29/07, Kai Schaetzl maillists@conactive.com wrote:
Mbneto wrote on Wed, 29 Aug 2007 14:36:49 -0400:
I have tried the grub-install --root-directory=boot --no-floppy hd0 (ou /dev/hda).
Did you already try a simple grub-install (hd0) where hd0 should be the disk that is used for booting and first in BIOS? And the grub.conf should reflect that you have a boot partition (assuming / is on /dev/md1): title CentOS (2.6.18-8.1.8.el5PAE) root (hd0,1) kernel /vmlinuz-2.6.18-8.1.8.el5PAE ro root=/dev/md1 initrd /initrd-2.6.18-8.1.8.el5PAE.img
Kai
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