Grub booting issue....

Udhayakrishnan · 02-04-2009, 12:36 AM

Hi,

I'm using suse 10 and ubuntu 8.10 in my Laptop. Just before a day, I updated suse which changed the Kernel file names. Now I get file not found in the grub while loading suse. However, when i mention the path (hdd0,2) to Kernel file, it loads without any issue.

Part info:

sda1 - Suse (/,root)
sda2 - Suse (/Home)
sda3 - Suse (/boot) -- *** Boot flag is here***
sda4 - Extended
sda5 - Swap
sda6 - FAT 32
sda7 - Ubuntu (/, root, /boot)
sda8 - Ubuntu (/Home)

The issue is here as follows:

The boot flag is with sda3. But, when the computer starts, it directly goes to sda7 and reads the menu.lst available in sda7 (ubuntu). If I make any changes in the sda7, it reflects in the booting time. but the changes made to the /boot/grub/menu.lst available in sda3 is not working.

Can anybody explain how the grub skips sda3 and moves to sda7 when the boot flag is with sda3...

Regards,
Udhaya Krishnan

Undeadzz · 02-04-2009, 12:41 AM

show the config file for menu.lst of the sda3 partition.

syg00 · 02-04-2009, 05:35 AM

Boot flag is irrelavant to grub.

yancek · 02-04-2009, 08:16 AM

I expect that you installed Ubuntu after Opensuse and the Ubuntu Grub installed its stage1 file to the master boot record pointing to the remaining Grub bootloader files on the Ubuntu partition (sda7). As syg00 said, boot flag is irrelevant for Grub.

CJS · 02-04-2009, 01:05 PM

If you want Grub to use the menu.lst in your sda3 partition, you have to reinstall Grub to the MBR so that it points to that partition; you can do that with (as root user):

Code:

grub
grub> root (hd0,2)
grub> setup (hd0)
grub> quit

And then Grub will go to sda3 for its boot files on start up.

Udhayakrishnan · 02-04-2009, 11:36 PM

You people are exactly right. The boot flag is irrelevant for the grub. I confirmed by moving the complete /boot (sda3) files to another folder and checked. The computer restarted and entered in to ubuntu /boot (sda7). Therefore, I concluded that the changes are in MBR and not in the /sda3 partition.

Thanks for every ones effort in replying. have a great day.