Gentoo + FreeBSD + Grub2 [MBR]

krax · n00b Joined: 29 May 2011 Posts: 67 Location: Troy, MI

Hello;
I recently installed freebsd along side gentoo and I did the os-prober part of grub2 installation procedure but grub2 doesn't find freebsd.
the freebsd nested partition is setting at /dev/sda1 and contains freebsd-ufs and freebsd-swap partitions.
How could I tweak the grub2 on gentoo to add freebsd to the grub menu list.
Thanks

nlsa8z6zoz7lyih3ap · Guru Joined: 25 Sep 2007 Posts: 388 Location: Canada

I haven't used FreeBSD in years, but when I did, I installed my bootloader from BSD. At that time, my linux bootloader couldn't read FreeBSD partitions.
Perhaps this still is the case.

krax · n00b Joined: 29 May 2011 Posts: 67 Location: Troy, MI

So how should I do dual boot; the linux grub can't read the UFS partition slice correctly and BSD have no support for ext4

666threesixes666 · Posted: Sat Jan 18, 2014 9:23 pm Post subject:

http://en.wikipedia.org/wiki/LILO_%28boot_loader%29#lilo.conf

though i may be a bit biased about how absurdly sexy lilo is. wiki.gentoo.org lilo article doesn't cover this, could you please document on that if / when you test....

heh troy, im like 80 miles from you. /me waves @ neighbor

realnerd · n00b Joined: 05 Jul 2013 Posts: 1

This is what I have in my gentoo grub.cfg:

menuentry "FreeBSD 9.2" {
set root=(hd0,3)
chainloader +1
}

You should just adapt the partition number.