boot0: is booting from non-BIOS-recognized disk possible?
freebsd-questions-local at be-well.ilk.org
Tue Apr 18 14:17:07 UTC 2006
Amanda Babcock Furrow <alb at quandary.org> writes:
> I have read the boot0cfg, disklabel (I have FreeBSD 4.9), and fdisk
> manpages trying to figure out if boot0 can solve my problem. I did
> not find the answer there, or in http://www.freebsd.org/doc/faq/disks.html
> or the freebsd-questions archives.
> I would like to be able to boot from my Seagate ST3120814A, which is
> not compatible with my BIOS (Award Modular BIOS v4.51PG, BIOS string
> 08/21/97-580VPX-VIA83669-2A5LD000C-00, VT 580VX MMX motherboard).
> The BIOS, for which no update was ever issued, will hang during disk
> detection unless I disable the Seagate by setting it to "None" in
> the BIOS (as opposed to "Auto" and "User", which hang). However,
> once I boot FreeBSD from an older disk, the Seagate is detected as
> /dev/ad3 and partitions from it can be mounted.
> I understand that boot0 can be configured to boot from a second disk
> using the -s 5 argument of boot0cfg. However, the boot0cfg man page
> does not go into great detail. Can boot0 boot from a disk which is
> disabled in BIOS but accessible from FreeBSD, or only from disks which
> the BIOS is able to detect?
The latter. It can, however, use the "packet interface" as well as
the old cylinder-based BIOS interface; perhaps that will work for you.
More information about the freebsd-questions