[CentOS] Re: VDQ Grub

Mon Jan 22 12:33:44 UTC 2007
John Summerfield <debian at herakles.homelinux.org>

Andy wrote:
>> Date: Sat, 20 Jan 2007 20:16:28 +0000 (UTC)
>> From: Beartooth <Beartooth at swva.net>
>> Subject: [CentOS] VDQ Grub
>> Very Dumb Question : I have tried about four times now, using an old
>> pentium2 with two hard drives (20 GB and 30 GB) to install both CentOS 4.4
>> and Fedora Core 6 in such a way as to enable dual-boot between them.
>> I've tried it by installing 4.4 first, and then FC6. I've tried it by
>> installing FC6 first, and then 4.4. I've tried it with and without giving
>> the installer permission to use both drives.
>> I always end up with ability to boot only to one OS, usually the one
>> installed last. Between tries I wipe both drives with DBAN.
>> Surely there must be something I'm doing wrong, obvious to many but not to
>> me. Clue, please?
> The way it works for me is:
> 1) Install distro 1 on the first drive, and let it put its GRUB into the MBR 
> of the drive. Mostly that is what installers want to do by default
> 2) Install distro 2 on the second drive but make it put its GRUB in the root 
> partition of the second drive. Looking at the RHEL installation guide, this 
> will be done via the "Configure advanced boot loader" option in the 
> Bootloader Configuration phase

The MBR of the second drive is fine.

I've had as many as four distros on _one_ drive, each with its own grub 
configuration; the first, in addition to booting something directly. 
chains to the others.

Note: SUSE distroes put all Linux systems into one grub configuration. I 
think this is a Bad Idea(tm) because when I install a new kernel, only 
one system has even the vaguest chance of updating its menu properly.



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