RE: Grub & CD

[Treutwein Bernhard]

Dear Chris,

although I'm not in the developer crew, please go ahead.

I just tried the compiled stuff ...

> -----Original Message-----
> From: Chris Lingard [mailto:address@hidden 
> Sent: Tuesday, July 08, 2003 10:06 AM
> To: address@hidden
> Subject: Re: Grub & CD
> 
> 
> On Tuesday 08 July 2003 8:37 am, Treutwein Bernhard wrote:
> > Hmm,
> >
> > there has been the patch to 0.93 by Leonid Lisovskiy
> > (see 
> http://mail.gnu.org/archive/html/bug-grub/2003-04/msg00014.html )
> > it compiles ok, but I did not yet find the time to
> > try it out  ...
> >
> > the problem is that the BIOS must recognize first that there
> > is a bootable CD in the tray and it has to switch to one of
> > the El Torito emulation modes: Floppy or HD or no emulation,
> > but it might be possible that Leonid's ISO 9660 driver allows
> > to dive into the cdrom and chainload into any bootable image
> > on the CDROM, even when it is not in an emulation mode.
> >
> > Someone has to experiment with it ...
> > 

it is not possible to chainload into the CD, when coming from
a floppy, GRUB does not recognize the CDROM :-(
but that might also be BIOS dependent ...

but that might be a smaller patch, but not on my side, I'm not
a C guru.

But, as far as I understand Leonid's posting, it should work, 
when having it on a CD in no-emulation mode.

See also: http://www.nu2.nu/bootablecd/ about the no-emulation 
mode although this page is quite heave directed to Redmont and
other commercial stuff.

PS: Please keep me informed about successes/failures.

regards
--
> >     Bernhard Treutwein, IuK, Ref. III A 3
> >
> > > -----Original Message-----
> > > From: Phonon [mailto:address@hidden
> > > Sent: Tuesday, June 10, 2003 4:09 PM
> > > To: address@hidden
> > > Subject: Re: Grub & CD
> > >
> > > At 8jun03 21:55, Yoshinori K. Okuji wrote :
> > > > At Fri, 06 Jun 2003 19:24:28 +0200,
> > > >
> > > > Phonon wrote:
> > > >> Is it possible to 'chainload' to a CD with GRUB ?
> > > >
> > > > No [...] Doesn't you want to do that yourself? :)
> > >
[...]
> 
> Hopefully this is what I am looking for.  I have been reading 
> this list for a 
> month or two, to find out if grub can boot a CD
> 
> I make this CD at www.stockwith.co.uk  The method of booting 
> is also built
> from scratch, so I would not want to include any other 
> product, (isolinux)
> 
> All CDs so far have used lilo, but the next version of LFS 
> will use grub.  It 
> would be nice if the boot CD could also use grub.
> 
> If I can be of help in testing this; please let me know.  I 
> have the creation 
> of the iso image in a script; so it is no problem to burn off 
> test CDs.
> 
> Chris Lingard
> 

--
        Bernhard Treutwein, IuK, Ref. III A 3
        Bernhard.Treutwein(at)verwaltung uni-muenchen de