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RE: Help autobooting FreeBSD 4.2
From: |
Jochen Hoenicke |
Subject: |
RE: Help autobooting FreeBSD 4.2 |
Date: |
Thu, 11 Jan 2001 19:05:41 +0100 (MET) |
On Jan 11, GB/DEV - Doug Poland wrote:
> > > As I was following the info page instructions for HD
> > > install, I wasn't sure if I should install into the
> > > MBR or the boot sector. I created the HD with the
> > > "dangerously dedicated" option.
> >
> > I don't know BSD. I just searched for "dangerously
> > dedicated" and if I understand the description correctly,
> > grub doesn't support those disks since they have no MBR.
> >
> I believe that to be the case...
There seems to be a valid MBR though. Grub detects the partitions
correctly:
> grub> root (hd0,a)
>
> Filesystem type is ffs, partition type 0xa5
> grub> geometry
Sorry, I meant "geometry (hd0)". But as you can access /boot/loader
everything seems to work:
> grub> kernel /boot/loader
>
> "...some FreeBSD stuff here..."
>
> grub> boot
>
> And away it goes...
>
> Is this chainloading?
No, but if this works, there is no reason not to do it with chainloading.
Chainloading would mean, that you install the native FreeBSD boot
loader into a partition and then do
rootnoverify (hd0,0) # or whereever the other boot loader resides
chainloader +1
boot
I'm still not sure what a "dangerous dedicated" disk looks like and if
it is safe to install grub to MBR.
If you want to boot automatically boot from a floppy, create a floppy
with some filesystem supported by grub (fat, minix, ext2, ffs), copy
stage1 and stage2 to directory /boot/grub on that floppy, create a
menu.lst in the same dir (see manual for the content of menu.lst),
start grub shell and enter "setup (fd0) (fd0)".
Jochen
Re: Help autobooting FreeBSD 4.2, Jochen Hoenicke, 2001/01/11