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Cannot boot with chainloading [Solved]

Posted: Sun Mar 28, 2010 12:31
by baskin
It is my first post, so hello to all!

I have a multiboot system with several distributions installed. I'm using Opensuse as my primary system and i have installed opensuse's grub on the MBR of my first disk (hd0) or /dev/sda.

I have other distributions installed (like Ubuntu, Arch Linux, Fedora). Every distro has its own grub installed on the first sector of the root partition of every different distro.

I'm booting to the other distros by chainloading entries on the opensuse's grub menu.

For example I have installed Ubuntu on /dev/sdc7 or (hd2,6) and have the following on opensuse's grub:
title Ubuntu
rootnoverify (hd2,6)
chainloader +1
This entry passes the boot to Ubuntu's grub and then the system is booting.

I'm trying to do the same with Sabayon. I have installed Sabayon on /dev/sdc9 and have the following entry on opensuse's grub:
title Sabayon
rootnoverify (hd2,8)
chainloader +1
I have also (during the installation of Sabayon) selected that Sabayon's grub is installed on the first sector of root partition (that means /dev/sdc9).

I cannot boot to Sabayon's grub and i'm getting an "Invalid or unsupported format" error from opensuse's grub.

Any help will be appreciated (i want to test Sabayon).

Thanks

Re: Cannot boot with chainloading

Posted: Sun Mar 28, 2010 14:10
by burgerman
Hi baskin,

have same prob.

just downloaded "supergrub" (from here: http://prdownload.berlios.de/supergrub/ ... m_1.30.iso)

with this I can start the sabayon partition now and will look for a solution to boot from harddisk.

(I am not very professional but learning by doing, and maybe someone else knows how solve this)

forum-search with "grub2" shows a lot of hints.

see you, burgerman

P.S. thanks lot to all the people who helped to create such a wonderful distro :D

Re: Cannot boot with chainloading

Posted: Thu Apr 01, 2010 20:54
by analyticalman
I had the same problem, to solve it
I changed my grub 1 entry (grub 1 is on my mbr, Sabayon is on disk 1 partition 1 with Grub2 in the root partition) from this;

title Sabayon
root (hd1,0)
chainloader +1

to this:

title Sabayon
root (hd1,0)
kernel /boot/grub/core.img
savedefault
boot

Now boots as expected. This tutorial solved it for me
http://www.dedoimedo.com/computers/grub ... ocId982259

Re: Cannot boot with chainloading

Posted: Fri Apr 02, 2010 13:04
by baskin
Yes it worked!!!

Thank you!!!!

Re: Cannot boot with chainloading

Posted: Fri Apr 02, 2010 14:13
by analyticalman
Cool - Glad to help - please consider marking post "solved" as it may help others

Re: [Solved]:Cannot boot with chainloading

Posted: Fri Apr 02, 2010 19:34
by baskin
Done! :wink:

Re: Cannot boot with chainloading [Solved]

Posted: Sat Apr 10, 2010 5:34
by PennyRoyal
analyticalman ...

You are the bomb! I've been trying to get my fresh SL install to boot since the first day 5.2 was released. I edited my menu.lst as you suggested and wham... loaded up right to my new desktop. Now birds are singing, flowers are a bloom'in and there's a rainbow over my room... Thank you, thank you, thank you...

Penny

Re: Cannot boot with chainloading [Solved]

Posted: Tue Apr 20, 2010 20:53
by analyticalman
Hey man - glad to help! I just hope Grub 2 gets a bit more sorted you know! At the moment, I cannot have it on my mbr due to a bug where it churns for ever if you try to load up a distro on a different disk. I'm sure it'll be good when its mature but for now it sure is causing some heat!