[ubuntu-in] OT - Multiple Booting of GNU/LInux OS's

[Onkar Shinde]

You can see which partition on each disk is marked as bootable from
the fdisk outout i.e. the one with '*'.

1. When you say (hd0,1) it means 1st partition on 0th hard disk. So in
your case you will have to specify (hd1,1).
2. You can see that root partition of your installation is specified
with UUID. UUID is a unique identifier for every hard disk partition
in your system. I am not sure if partitions on a USB disk will have
same UUID everytime you boot. But if it is the case then you can boot
into Ubuntu and find UUID for all partitions with command 'ls -l
/dev/disk/by-uuid/'.
3. It is possible to dynamically specify kernel, initrd, and root in
grub instead of trial and error on menu.lst. When you see grub menu of
Ubuntu, press 'c' key. It will give you a command prompt. You can then
give commands root, kernel and initrd. After that give command 'boot'.
Ifthe parameter you have provided are correct it will boot in
Mandriva. If now you can reboot machine by Ctrl + Alt + Del and try
again. This way you won't have to boot in Ubuntu everytime. Once you
have found correct values add those to your menu.lst

Hope this helps.


Onkar