Grub and ubuntu

[Tony Arnold]

Karl,

Karl Larsen wrote:
> Tony Arnold wrote:
>> Karl,
>>
>> Karl Larsen wrote:
>>   
>>>     I just discovered a bad situation. Go back a few weeks when I used 
>>> dd to copy my ubuntu from /dev/hda2 to /dev/hda8 and I changed the root 
>>> calls in menu.lst so grub will boot the copied version on /dev/hda8. It 
>>> seemed to work.
>>>
>>>     But noticed when I used df that it said it was using /dev/hda2. I 
>>> wondered why df was wrong.
>>>
>>>     I learned yesterday that the grub call below was booting /dev/hda2 
>>> instead of /dev/hda8 as it is expected to.
>>>
>>>
>>> title           Ubuntu 7.10, kernel 2.6.22-14-generic
>>> root            (hd0,7)
>>> kernel          /boot/vmlinuz-2.6.22-14-generic 
>>> root=UUID=a9c1cb61-ddfd-44f6-88b
>>> 0-6dc976daf9ca ro quiet splash
>>> initrd          /boot/initrd.img-2.6.22-14-generic
>>>
>>> For some reason this was booting /dev/hda2 which is a mystery to me.
>>>     
>> Did you fix up /etc/fstab to mount / from hda8 as well?
>>
>> Regards,
>> Tony.
>>   
>     I do not know how to do that. Here is my /etc/fstab:
> 
> # /etc/fstab: static file system information.
> #
> # <file system> <mount point>   <type>  <options>       <dump>  <pass>
> proc            /proc           proc    defaults        0       0
> # /dev/hda8
> UUID=a9c1cb61-ddfd-44f6-88b0-6dc976daf9ca /               ext3    
> defaults,erro
> # /dev/hda1
> UUID=7915f630-518c-425b-9fea-0ef07e50d0f9 none            swap    sw
> # /dev/sda2
> UUID=7d8c37ed-b2ec-4008-a137-f24c6659c5ab none            swap    sw
> /dev/hdb        /media/cdrom0   udf,iso9660 user,noauto,exec 0       0
> LABEL=f7-home       /f7home          ext3     defaults       1    2
> /dev/hda9           /home            ext3     defaults       1    2
> 
>     I don't know how to change this:
> 
> UUID=a9c1cb61-ddfd-44f6-88b0-6dc976daf9ca /

Typing:

	sudo vol_id --uuid /dev/hda8

will tell you the partition's uuid that you can cut an dpaste into
/etc/fstab. Partition names, e.g., /dev/hda8, are no longer used in fstab.

Regards,
Tony.
-- 
Tony Arnold, IT Security Coordinator, University of Manchester,
IT Services Division, Kilburn Building, Oxford Road, Manchester M13 9PL.
T: +44 (0)161 275 6093, F: +44 (0)870 136 1004, M: +44 (0)773 330 0039
E: tony.arnold at manchester.ac.uk, H: http://www.man.ac.uk/Tony.Arnold