Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Hello Serverfault community.

I hope someone can shed light on a peculiar problem I am having with an Ubuntu 9.10 server install. I am not a Linux expert but have the responsibility of fixing the box if something goes wrong. DOH!

I have Ubuntu 9.10 server installed on on a desktop platform: Compaq Presario SR5027CL.

There are two 1TB SATA drives configured in a RAID 1 array; I use the box as an email backup server for a small group of users.

Last week one of the drives failed and was replaced with a new drive of the same type.

The problem I have been having is getting the box to reboot after a restart or a shutdown halt.

The OS and the RAID 1 array are on the same drives that make up the RAID 1 array. The replacement drive (sda) was added to the box and the partitions were created to match the existing good drive (sdb).

The array is made up of sda1 and sdb1.

I found an interesting point while checking the BIOS settings: there is a "HDD Boot Group Priority" section, and the new drive was selected as the "1. 3rd master"; the server wouldn't boot configured like that, but when I set the old drive to be "1. 4th master", the box will reboot.

I'm checking some more things, but I would certainly appreciate any useful information.

Thanks in advance.

share|improve this question

The most likely cause is that grub is installed on one drive, but not on the other.

You should explicitly install it on both.

share|improve this answer
Hi Steve, you are correct sir!. I was just getting ready to update my question. Here's what I found: – user149041 Dec 11 '12 at 16:16

the replacement drive was installed pretty smoothly, but there were some issues with getting the system to reboot after a shutdown. The steps taken to add the replacement drive did bot seem to be the culprit. I checked the BIOS settings and found that the new drive was selected as the first boot drive. When this setting was changed to the old drive, the system would boot/reboot normally.

GRUB had not been installed on the MBR of the new drive, so I had to reinstall GRUB from the Ubuntu 9.10 Live CD and point it to /dev/sda.

booted off of the live CD. chose rescue a broken system from the options menu blew through the options, i.e., language, keyboard. named the server techsrvr. chose /dev/md0 as the root file system. chose Reinstall GRUB Boot loader from the options. entered /dev/sda and continue.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.