Boot issues using multiple drives

Greg Booth bootgr at
Thu Jul 5 21:22:29 BST 2007

> Jeff Yowell wrote:
> > I am using Ubuntu on a Mac G4.  I have OSX installed on an SATA bus.
> > Then, I have Ubuntu installed on a disk on the machine's ATA bus.
> > Ubuntu doesn't seem to want to find the SATA bus, and always goes
> > into Ubuntu regardless of how many times I reset the PRAM on the
> > machine.
> >
> > Has anyone else had experience with this?  How can I boot into OSX
> > when I have a linux disk on the system?
> >
> > Thanks
> >
> >
> > jeff
> >
On 7/5/07, Trevor <tpankonien at> wrote:
> I would like someone to back me up on this, but you should be able to
> tweak your /boot/grub/menu.lst file to include a pointer to the other
> disc containing OSX.  I will do some looking and see if I can't get you
> some better info.
> Trevor

Try this

Back up your menu.lst file

    sudo cp /boot/grub/menu.lst /boot/grub/menu.lst.bak

Update your bootable drives

    sudo update-grub

That should regenerate your boot drives, I'd then make sure you turn
off the bootscreen by commenting out the line "hiddenmenu" in the grub
menu.lst file and upping the time you have to select an os to boot by
taking the timeout option in the same file up to 10 at least.

This will hopefully give you the chance to see your other bootable
OS's, I had a little trouble getting my Winblows drive to be
recognized and usable and this turned the trick. Turns out it was
actually there, but the default 3 seconds wasn't enough, seems to lag
about 2-3 seconds just showing the screen so my default just kept
getting selected without my intervention.

Greg Booth

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