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Old 01-20-2010, 08:49 AM   #1
scoob8000
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Moved install to new drive (/hda to /sda) - Wont boot


I just moved a Centos 5 install (using Grub to boot) to a new hard drive in the same system. Moved from and IDE drive to a SATA so now my device is /dev/sda instead of /dev/hda.

Without changing any lines in Grub, it starts to boot and gets to
Unable to access resume device SWAP-hda2
Mount: Could not find filesystem '/dev/root'


I'm sure it's a matter of booting a rescue cd and editing the proper files, but not sure where to begin..

Last edited by scoob8000; 01-20-2010 at 02:40 PM. Reason: Solved - Title
 
Old 01-20-2010, 08:58 AM   #2
mdg
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The kernel line in menu.lst should point to root=/dev/sda

You will also need to edit /etc/fstab to reflect the change.

Last edited by mdg; 01-20-2010 at 08:59 AM. Reason: grammar
 
Old 01-20-2010, 10:24 AM   #3
scoob8000
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In the meantime I did fumble around with my menu.lst and did fix the root= line. Should that be /dev/sda or /dev/sda3 (my root partition)?


Oddly I did edit my /etc/fstab, but on the next boot I'm still getting
Quote:
Unable to access resume device SWAP-hda2
I did boot up my rescue disc, and low and behold my fstab is still correct.

On another attempt I tried getting rid of all the labels in menu.lst and /etc/fstab. Still hangs with the same messages.

Last edited by scoob8000; 01-20-2010 at 10:35 AM.
 
Old 01-20-2010, 01:19 PM   #4
mdg
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Yes, root= should point to /dev/sda3 if that is your root partition.

I assume that your swap partition was hda2. If it is now on the same disk as your root partition, will be called /dev/sda*. Make sure that is also updated in /etc/fstab.
 
Old 01-20-2010, 01:45 PM   #5
Quakeboy02
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Don't forget your device.map.

And also don't forget that your goal is to get the system working; not to become an expert in grub. Google "Super Grub Disk". It has a very good track record of fixing things like this.
 
Old 01-20-2010, 01:53 PM   #6
scoob8000
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Quote:
Originally Posted by mdg View Post
Yes, root= should point to /dev/sda3 if that is your root partition.

I assume that your swap partition was hda2. If it is now on the same disk as your root partition, will be called /dev/sda*. Make sure that is also updated in /etc/fstab.

Correct, that's all good.

FWIW, my partitions are sda1 = boot, sda2 = swap, sda3 = root.


Well, I'm still getting hung up at the same spot. I did notice a file in my grub folder called device.map. In it was an entry pointing hd0 to /dev/hda.

I fixed that, but still no avail.

I'm downloading a rescue disk now to try to build a new initrd.
 
Old 01-20-2010, 02:32 PM   #7
Quakeboy02
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Quote:
Originally Posted by scoob8000 View Post
I did notice a file in my grub folder called device.map. In it was an entry pointing hd0 to /dev/hda.
And you don't have a /dev/hda anymore, right?
 
Old 01-20-2010, 02:40 PM   #8
scoob8000
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[SOLVED]

I ended up remaking my initrd image from the rescue disc.

Thanks for your help! I don't use the forums much, but I'm sure glad they're here!
 
  


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