freebsd dell G5 efi dual boot (freeBSD + Ubuntu)

[zeroprime]

i have been trying to install freebsd and ubuntu as efi entries on my new dell G5 and a have no luck what so ever. I can efi-boot either of oses when they are only os on the system but when i install other one neither will boot. 

i have tried ~ everything i could find on web.  

Please, if anyone have any ideas or solutions i would greatly appreciate. 

[Sauron]

Hmm, are you using separate drives or partitioning a single drive?

 

The FreeBSD documentation suggests running this command to make sure the partition table is compatible with boot0:

fdisk -B -b /boot/boot0 device

(obviously you should substitute device with your device name)

 

What could be happening is that the two systems are overwriting each other's partition table and/or bootloader and creating a situation that allows neither to boot.

[zeroprime]

@Sauron    are you sure this is relevant to UEFI?  as far as i can gather this is fo MBR and not EFI

[zeroprime]

OK, for anyone facing similar problem , here is how i got it to work

 

1) firsts install ubuntu for efi boot  

2) then boot freeBSD form disk or stick 

3) when partitioning let BSD installer create one more efi partition 

4) configure bios boot order 

 

done ! 

for me,  both would not work on the same efi partition

[Chunchunmaru_]

 

13 hours ago, zeroprime said:

OK, for anyone facing similar problem , here is how i got it to work

 

1) firsts install ubuntu for efi boot  

2) then boot freeBSD form disk or stick 

3) when partitioning let BSD installer create one more efi partition 

4) configure bios boot order 

 

done ! 

for me,  both would not work on the same efi partition

You could also make some uefi entries with efibootmgr pointing at different bootloaders (they have an .efi extension in the efi partition)

or just using grub and chainloading the bootloader in it