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Old 08-21-2008, 11:35 PM   #1
RensoreK
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Question Dual Booting (2 Linux from Separate Drives) GRUB issue.


Hello everyone. I'm somewhat of a noob, I've been using Linux as my full-time desktop computer for about almost a year. Now, I'm currently using PCLinuxOS and I want to dual boot with Ubuntu. The problem is Ubuntu is already installed on (hdb1 (/root), hdb6(/home)) and PCLinuxOS is on hda2(/root),hda3(/home). Problem is Grub does not see Ubuntu. Even though when I use the SuperGrub disk, it does see the Ubuntu partitions. Do I need to create some complicated /boot partition to make this work? I am entirely lost. Or would I need to somehow edit the Grub menu to find Ubuntu (Seems more logical?) If so, can someone help me get about doing this?
 
Old 08-22-2008, 01:01 AM   #2
pinniped
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When you installed PCLinuxOS you probably reinstalled GRUB without knowing it. You just need to make sure that both GRUB menu.lst files have the same information so that it doesn't matter which menu.lst file is checked:

1. Boot into PCLinuxOS

2. mount your Ubuntu root directory - let's say on /mnt

3. tack the Ubuntu 'menu.lst' onto your PCLinuxOS menu.lst then edit as appropriate:
cd /boot/grub
cp menu.lst menu.lst.bak
cat /mnt/boot/grub/menu.lst >> menu.lst
(then edit menu.lst)
Of course you can just write down or cat the appropriate lines from one menu.lst to the other.

4. Copy your new menu.lst over to the Ubuntu side:
mv /mnt/boot/grub/menu.lst /mnt/boot/grub/menu.lst.bak
cp menu.lst /mnt/boot/grub/menu.lst

5. Make sure your system boots the way you want and you can remove the 'menu.lst.bak' files.
 
  


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