Re: [opensuse] Booting different distros

2007-06-21 Thread Billie Erin Walsh
Fernando Costa wrote:
> I'm planning to install some linux distros (openSUSE is the first one
> I've installed), I already have done the disk partitioning, including
> one partition to install GRUB, so I installed the grub on the boot
> partitioning, however when I installed openSUSE 10.2, it (apparently)
> overwrites my existing GRUB partition, because when I restart my laptop
> the openSUSE's and not my GRUB starts. So, there's a way to install the
> boot on the openSUSE's root? Or how can I use openSUSE's grub to run the
> other distros?
>
> Thanks for your help
>   

I have this computer triple booted, Now I have to say right up front
that my computer has a built in boot loader. During the "POST" it comes
up as  and .  I use one IDE drive
and, so far, two SATA drives. Whichever drive I want to install on I
disconnect the power to all the other drives before I install. That way
each drive thinks it's the only one in the machine.

Now, I know there are ways to set up all the OS's in Grub, BUT when I
had things that way and I needed to do something to the drive that had
Grub on it I was pretty much screwed. I would loose Grub or had to futz
around for hours trying to get things working again. Tain't worth the
hastle. I simply pick which drive I want to boot from and I'm off and
running.

This method only works with one IDE and SATA drives and a boot loader
other than Grub. A slave IDE won't work. Somehow the bios doesn't like
to boot from a slave directly. Even with the bios settings for it to do
so. SATA drives don't have Master/Slave relationships so they work.

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Re: [opensuse] Booting different distros

2007-06-20 Thread jdd

Fernando Costa wrote:

I'm planning to install some linux distros (openSUSE is the first one
I've installed), I already have done the disk partitioning, including
one partition to install GRUB, so I installed the grub on the boot
partitioning, however when I installed openSUSE 10.2, it (apparently)
overwrites my existing GRUB partition, because when I restart my laptop
the openSUSE's and not my GRUB starts. So, there's a way to install the
boot on the openSUSE's root? Or how can I use openSUSE's grub to run the
other distros?


by default any distro installs it's bootloader on the MBR (windows do 
the same).


So if you don't want to erase you install anytime, you have to install 
the bootloader _on the root partition_


for openSUSE there is an option to do so in the expert tab

after that, you have only to add a chainloader line in each grub entry 
you wan to know of the other distros, like that one


title Windows
chainloader (hd0,0)+1

of course you need to have _one_ distro to have _also_ aMBR entry, 
usually the older one (but if you are as silly as I am it's the last 
one :-)))


jdd



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Re: [opensuse] Booting different distros

2007-06-20 Thread Darryl Gregorash
On 06/20/2007 09:46 PM, Fernando Costa wrote:
> I'm planning to install some linux distros (openSUSE is the first one
> I've installed), I already have done the disk partitioning, including
> one partition to install GRUB, so I installed the grub on the boot
> partitioning, however when I installed openSUSE 10.2, it (apparently)
> overwrites my existing GRUB partition, because when I restart my laptop
> the openSUSE's and not my GRUB starts. So, there's a way to install the
> boot on the openSUSE's root? Or how can I use openSUSE's grub to run the
> other distros?

First, you had installed the other distro's grub into the MBR of your
drive, and then installed opensuse's grub over top of it. This is not a
problem. However, I am surprised that the opensuse installer did not
find the other distro and recommend to include an entry in opensuse's
grub menu.

You need to add one or more entries from the other distro's grub menu
into the opensuse menu, as follows:

1. boot opensuse, and if necessary mount the partition that contains the
other distro's /boot directory. I will  make these assumptions:

   a) the root (/) partition for opensuse is /dev/hda2, and the root
partition for the other distro is /dev/hda1.
   b) neither distribution has a separate partition for /boot.
   c) you have mounted the other distro as /mnt (ie. mount /dev/hda1
/mnt).

2. Make a backup copy of opensuse's /boot/grub/menu.lst.

3. Now you need to open /boot/grub/menu.lst (the grub menu for opensuse)
and /mnt/boot/grub/menu.lst (the grub menu for the other distro) in a
text editor. The menu file for the other distro will include a section
that will look something like this:

title (some other distro)
root (hd0,0)
kernel /boot/vmlinuz root=/dev/hda1 vga=normal selinux=0 
splash=silent resume=/dev/hdb3  showopts
initrd /boot/initrd

You need to copy these lines exactly as they appear from (other
distro)/menu.lst into the opensuse menu.lst.

4. Save the modified /boot/grub/menu.lst.

The next time you boot the system the menu item for the other distro
will be there for you to select (though why you would want to have any
other distro than opensuse on your system is something I do not
understand :-) )


-- 
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[opensuse] Booting different distros

2007-06-20 Thread Fernando Costa
I'm planning to install some linux distros (openSUSE is the first one
I've installed), I already have done the disk partitioning, including
one partition to install GRUB, so I installed the grub on the boot
partitioning, however when I installed openSUSE 10.2, it (apparently)
overwrites my existing GRUB partition, because when I restart my laptop
the openSUSE's and not my GRUB starts. So, there's a way to install the
boot on the openSUSE's root? Or how can I use openSUSE's grub to run the
other distros?

Thanks for your help
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