Re: is booting (a SW RAID1) from a second IDE controller possible?
Maybe your motherboard/bios has an unusual set of
requirements, but normally you would not have to have
a disk attached to the first controller. Can you boot
from a cdrom? It's the same thing -- I don't know the
mechanics, but usually in the bios you can set the
sequence of devices the computer tries to boot from
(often floppy, hard disk, cdrom). As long as you have
the hard disk in the sequence, or perhaps something
identified as hard disk 2, you'll be fine.
In terms of the kernel config, I don't think its
something you can do with modconf. In fact, now that I
think of it, I applied the -ac patch to the kernel
because that had newer/better ide options than the
stock kernel. I'm not sure its still necessary to do
that, though.
If you do use an -ac kernel, and need some info on
"ide=reverse", the option is in:
ATA/IDE/ ... support -->
IDE/ATA ... block devices -->
select your normal options plus:
IDE Taskfile IO
Boot off-board chipsets first support [info on
ide=reverse is here]
In terms of applying patches and compiling your own
kernel, if you're not that familiar with it, I can't
recommemd kpkg enough. And kernelnewbies.com is
helpful to.
--- Vinai Kopp <vinai@netzarbeiter.com> wrote:
> On Tue, Aug 06, 2002 at 01:36:16PM -0700, Richard
> Weil wrote:
> > I missed the beginning of this thread, so I could
> be
> > missing the point entirely, but it is possible to
> boot
> > from a software RAID setup on a second IDE
> controller.
>
> Thanks for the input! You were right on track :)
> But I guess I will still need a disk on the on board
> controller where
> the bios can find an mbr, right?
>
> > I setup a Promise ata133 ide controller with 2
> drives
> > attached in RAID1 configuration -- system boots
> fine.
> > In the kernel configuration, in the ATA/IDE/...
> > section, select the "Boot off-board chipsets
> first".
>
> Hmm, I don't suppose this would me configurable via
> modconf? I like
> stock kernels because it's so easy to add modules
> that way.
> But no problem, I'll set up a kernel with that
> option this weekend
> and try it out!
>
> > You should read the help; you'll want to add an
> > "ide=reverse" parameter to LILO.
>
> I havn't found any reference to the ide=reverse
> parameter in the
> manpages to lilo or lilo.conf. Any pointers?
>
> Thanks a million!
>
> Greetings,
> --
> Vinai
> Registered Linux User #280755, Debian GNU/Linux
> http://counter.li.org/
> Secure eMail with gnupg
> http://www.gnupg.org/
>
> ATTACHMENT part 2 application/pgp-signature
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