Default MBR boot "manager"
Nathan Whitehorn
nwhitehorn at freebsd.org
Mon Nov 11 21:32:10 UTC 2013
On 11/11/13 15:19, Teske, Devin wrote:
> Topic: Lenovo Laptops and bsdinstall zfsboot with MBR layout...
>
> Should we do the quick patch to change the default
> from /boot/boot0 to /boot/mbr:
>
> Index: zfsboot
> ===================================================================
> --- zfsboot (revision 258016)
> +++ zfsboot (working copy)
> @@ -764,7 +764,7 @@ zfs_create_diskpart()
> #
> f_eval_catch $funcname gpart "$GPART_CREATE" mbr \$disk ||
> return $FAILURE
> - f_eval_catch $funcname gpart "$GPART_BOOTCODE" /boot/boot0 \
> + f_eval_catch $funcname gpart "$GPART_BOOTCODE" /boot/mbr \
> \$disk || return $FAILURE
>
> #
>
> That would fix things for Lenovo laptops for the next
> release until I finish up the bootcode selection menu.
> I'd like to take my time in making sure Allan and I design
> a worthy bootcode selection menu.
This patch looks good (I don't remember why it was boot0 in the first
place). I think gpart automatically installs something like /boot/mbr by
default, so I'd be interested to know if making the diff purely negative
still works.
On another note, I think we should move away from a selector. Right now,
we have three kinds of boot code:
1. ZFS boot code
2. UFS boot code
3. boot0
Unifying 1 and 2 would help a lot -- I don't know of any reason we need
both except for tradition. #3 is probably best done as a post-install
config step ("Install FreeBSD boot manager" or something), which also
means it works for UFS systems.
-Nathan
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