Grub2: How to clone a bootable disk?

2012-08-24 Thread T Elcor
Hi,

I have two identical hard drives, one HD contains a bootable wheezy 
installation and I'd like to clone it to the other HD. My first idea was to use 
dd but since grub2 uses disk IDs in /boot/grub/devices.map and /etc/fstab 
then once the disk is cloned it probably will not boot, unless I fix the 
entries in the above files. To fix the files I need to know disk IDs and 
partition UUIDs... not sure how to get them. Is there an easier way to clone a 
bootable disk without editing grub2 and fstab files?

Thanks


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Re: Grub2: How to clone a bootable disk?

2012-08-24 Thread Camaleón
On Fri, 24 Aug 2012 10:34:54 -0700, T Elcor wrote:

 I have two identical hard drives, one HD contains a bootable wheezy
 installation and I'd like to clone it to the other HD. My first idea was
 to use dd but since grub2 uses disk IDs in /boot/grub/devices.map and
 /etc/fstab then once the disk is cloned it probably will not boot,
 unless I fix the entries in the above files. To fix the files I need to
 know disk IDs and partition UUIDs... not sure how to get them. 

ls -ls /dev/disk/by-*id will tell.

 Is there an easier way to clone a bootable disk without editing grub2
 and fstab files?

You can clone it (better from Clonezilla or at least from a non-live 
system) and then edit the needed files from a LiveCD. Don't worry, most 
sure is that the cloned system is still bootable by direct input 
(manually) from GRUB2 itself.

Greetings,

-- 
Camaleón


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Re: Grub2: How to clone a bootable disk?

2012-08-24 Thread T Elcor
From: Camaleón noela...@gmail.com

   To fix the files I need to  know disk IDs and partition UUIDs... not sure 
 how to get them. 
 
 ls -ls /dev/disk/by-*id will tell.

Thank you. A lot clearer now.



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Re: Grub2: How to clone a bootable disk?

2012-08-24 Thread Tom H
On Fri, Aug 24, 2012 at 1:34 PM, T Elcor tel...@yahoo.com wrote:

 I have two identical hard drives, one HD contains a bootable wheezy
 installation and I'd like to clone it to the other HD. My first idea was
 to use dd but since grub2 uses disk IDs in /boot/grub/devices.map
 and /etc/fstab then once the disk is cloned it probably will not boot,
 unless I fix the entries in the above files. To fix the files I need to
 know disk IDs and partition UUIDs... not sure how to get them. Is
 there an easier way to clone a bootable disk without editing grub2
 and fstab files?

dd ... should preserve the UUIDs but you can get the UUIDs from blkid.


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