grub sees 2 out of 3 systems...lucky me

[Karl Larsen]

On 04/26/2010 06:43 PM, Robert Holtzman wrote:
> On Fri, 23 Apr 2010, Lucio M Nicolosi wrote:
>
>            .............snip...............
>    
>> I guess the first thing to do is check whether the HD definitions are
>> correct (since the uuids do not easily change)
>>
>> Boot your system with GParted live CD and check the right parameters
>> (hdx,x) for each partition, Lenny, Jaunty, Hardy and Karmic. You already
>> know for sure (from your menu.lst) the correct id of your working
>> partition. Perhaps it would be a nice time to label each partition with
>> proper nickname.
>>
>> Then, enter the system that is still accessible and run:
>>
>>     ls -l /dev/disk/by-uuid/
>>      
> I don't think it has to be done from a live CD. I did it successfully from
> a mounted 8.04 system. I learned this command some time ago but forgot
> it in the interim.
>
>    
>> to get every UUID of your partitions. Since this command also gives you
>> the number of the partition (sda1, sda3, etc) the first step is not
>> really needed but you have to remember that in Grub1 (hd0,0) is in fact
>> sda1, like in the example above where (hd0,8) was sda9. Grub2 changed
>> this.
>>
>> Then you'll have to mount every single partition that contains a Linux
>> version to get every kernel version you may find at
>> media/[partition]/boot. Or you can check each /boot/grub/menu.lst and
>> extract the commands lines for each kernel (like I roughly did above)
>>
>> With these informations you are now prepared to edit your menu.list in
>> your working system, so that it addresses each kernel found in you
>> computer with the proper HD Identification and UUID.
>>
>> Remember that in a computer with several system partitions the menu.lst
>> has to be manually updated every time a (secondary) system has a kernel
>> upgrade.
>>
>> I believe that by properly editing your menu.lst there's no way your
>> systems can keep ls -l /dev/disk/by-uuid/"hiding themselves".
>>
>> But I'm not sure.
>>      
> Me either. Running ls -l /dev/disk/by-uuid/ indeed gave me all the
> partition UUIDs and since I knew what partitions 9.04 resides on and what
> those partitions are, I could tell that the stanza I entered in the 8.04
> menu.lst belonged to the 9.04 / partition. Just for the Hell of it I
> changed the UUID to that of the /boot partition (on my systems I put
> /boot on it's own partition). Same problem. "File not found".
>
> Also the stanzas were copied from my backup made when 9.04 would
> successfully boot so I'm confident they are correct.
>
> Did I miss anything?
>
> Anyone else? Please.
>
>    
         I assume the latest version you loaded is 9.10. Is this 
correct?  If correct I think your active grub should be from this 9.10 
version. Did you select Grub 1 or Grub2? If you don't know look at the 
/boot/grub/ directory of 9.10 and see if it has a few files and 
menu.lst, or, a whole lot of files one of which is grub.cfg.


73 Karl


-- 

	Karl F. Larsen, AKA K5DI
	Linux User
	#450462   http://counter.li.org.
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