Re: chain hd0 and next bios

[Carl Karsten]

On Sat, May 6, 2017 at 12:30 AM, Andrei Borzenkov <address@hidden>
wrote:

> 05.05.2017 23:49, Carl Karsten пишет:
> > On Fri, May 5, 2017 at 12:20 PM, Andrei Borzenkov <address@hidden>
> > wrote:
> >
> >> 05.05.2017 07:31, Carl Karsten пишет:
> >>> pxe boot grub-net
> >>>
> >>> I want options to tell the bios Never mind, failed to boot anything,
> try
> >>> next device,
> >>>
> >>> label bootnext
> >>>     # fail the pxe boot,
> >>>     localboot 0
> >>>
> >>
> >> Does "exit" work for you here?
> >>
> >
> > Why yes it does!
> > that was easy.
> >
> >
> >>
> >>> and also Boot HD0 (for some idea of first hard disk)
> >>>
> >>> label boothd
> >>> # boot from the first HD
> >>>         kernel syslinux/chain.c32
> >>>         append hd0
> >>>
> >>
> >> Not sure - if this is generic question "how to chainload something", it
> >> would be
> >>
> >> set root=hd0
> >> chainloader +1
> >>
> >>
> >
> > Error disk 'hd0' not found
> >
>
> You likely need to "insmod biosdisk" before, PXE grub image (at least as
> built by grub-mknetdir) does not include it.
>
>
that woks.  two down.  thanks.



> >
> >
> >> which loads first sector of hd0 and jumps to it. The value of ${root} is
> >> passed as boot device, it is in principle possible to do
> >>
> >> set root=hd0
> >> chainloader (hd1)+1
> >>
> >>
> > Error disk 'hd1' not found
> >
> >
> >
> >> If you are aware of it and your question is specific to PXE boot - could
> >> you elaborate?
> >>
> >
> >
> > I don't think it is specific to pxe other than it might not make sense
> for
> > a grub booted from the hd  to have an option to load itself again.
> >
> > or maybe it explains why there is no hd0?
> >
> >
>
>


-- 
Carl K