multi-boots with grub2 ?

[bsdaddict]

Hi,

I just had a look at the new Ubuntu 9.10. It comes with the grub2 bootloader. But it does not seem to find the (pc)bsd partition on my pc. It did find its own Ubuntu/linux and the Windows XP partitions without any problem. But no entry for bsd...
Google turns up very little about this too (just one interesting : http://forums.freebsd.org/showthread.php?t=5918).
Has anybody some workarounds on multibooting bsd with grub2 please or do i have to wait it out ? I know, grub still works fine but grub2 seems to have some nice features too :-)
Thanks !

[TerryP]

Aside from adding linux, freebsd, and netbsd commands and scripting support, I'm not aware of any pertinent changes in GRUB 2. That forum post seems to provide all the information you require.


Have you read the guide, particularly the reference to FreeBSD F.A.Q. ? If it doesn't work, try chain loading /boot/loader out of the partition. Annotations for GRUB 2 may find their way into the page.

[mxgeek]

I ran into the same problem, it took some fiddling with the new grub configuration files (in /etc/grub.d/ now instead of menu.lst). I have PCBSD installed in a second drive in my system. Following the pointers in https://wiki.ubuntu.com/Grub2, I created the file 50_pcbsd in the directory /etc/grub.d/ and ran update-grub. The contents of the file are:

cat << EOF
menuentry "PC-BSD 7.1" {
set root=(hd1,1)
chainloader +1
boot
}
EOF



where (hd1,1) means the *second disk*, *first partition*.

YMMV - good luck

[msnthrp]

I am using Sabayon Linux on sda [=(hd0)] and PC-BSD on sdb [=(hd1)] in the first primary partition. I was (finally) successful in booting PC-BSD by modifying (as root) the Sabayon /etc/grub.d/40_custom by adding

menuentry "PC-BSD 8.0" {
set root=(hd1,1,a)
chainloader +1
}

Since Sabayon did not put in the alias "grub-update", I had to run the full command of

grub-mkconfig -o /boot/grub/grub.cfg

to get the command transferred to the Grub2 menu. If the command is forgotten, it can be found at the top of the Linux page /etc/default/grub.

Not sure if this posting is in the right place so administrator feel free to move it where ever it is most appropriate.

Best

[msnthrp]

BTW, I am triple booting from Grub2

Sabayon Linux 5.3
Puppy Linux 5.0
PC-BSD 8.0

Probably could add more but don't need them.

Best

[Sander M]

I am running Windows 7, Ubuntu 10.04 and PC-BSD 8.1 at the moment.
The booting is done by the Ubuntu Grub2.
I have 4 partitions. 1st, Windows. 2nd, NTFS DATA. 3rd, Extended for Ubuntu(ext4, swap and an other data in ext4). 4th, PC-BSD.

In Ubuntu I used this command to edit Grub.

sudo nautilus /etc/grub.d/

then open the 40_custom file and add this:

menuentry "PC-BSD" {
set root='(hd0,4)'
chainloader +1
}

since partition 4 is where my PC-BSD install is.
After that

sudo update-grub

reboot and voila, triple boot

[makan]

@Sander M

wow... thank you for your post.... it save my day