grub for triple boot

[Jim Cornette]

Thufir wrote:
> The slave hard drive on my box is dual boot windows/linux.  The master 
> also has linux.  This makes for three OS's.  Only the master hard drive 
> is booting at the moment, which I'd like to fix.  All data has been 
> backed up.
> 
> When I attempt to boot windows I get an excerpt from 
> /boot/grub/grub.conf as follows:
> 
>   title Other
>           rootnoverify (hd1,0)
>           chainloader +1
> 
> 
> Other meaning windows (which I should change).  Prior to installing 
> linux to the master, windows on the slave booted fine.  However, linux 
> on the slave didn't boot.  To expedite things I just went ahead and 
> installed linux on the master, as that seemed easiest at the time.
> 
> I know that grub can be edited, but I don't how it should be changed.
> 
> Perhaps this is related to the MBR on hdb?  I don't mind re-installing 
> windows to hdb, I wanted to repartition anyhow.
> 


If windows was installed originally with the drive as the master, it has 
a boot.ini file that has information regarding references to the master 
drive location. You can edit this file after reading about all of the 
meanings for rdisk, etc used in the file to reference the secondary disk 
instead.

It is also possible to add entries to the grub.conf file so Windows 
thinks that it is the primary drive by fooling BIOS. There was much 
discussion over the years regarding this tactic. I do not recall the 
calls to grub.

Regarding getting your second Linux installation to boot. It is possible 
to install grub for the secondary version of Linux to the boot partition 
(EXAMPLE: install grub to /dev/hdb2) and then chainload this 
installation by adding something like the below to your primary disk 
version of grub. Then the secondary installation should boot from there.

Ideas, not a really detailed reply.

title Gentoo
          rootnoverify (hd1,1)
            chainloader +1

Jim

> 
> 


-- 
"What are we going to do tonight, Bill?"
"Same thing we do every night Steve, try to take over the world!"