On what hdd is grub installed? Make sure bios boots from it. Second for dos you may need to recrete partition table, boot from an live usb with gpart and at device you will find create partition tabe then selec dos. <div class="gmail_quote">On Oct 26, 2015 12:16 PM, "Petter Adsen" <<a href="mailto:petter@synth.no">petter@synth.no</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Mon, 26 Oct 2015 12:02:54 +0200 Victor Sterpu <<a href="mailto:victor@casnt.ro">victor@casnt.ro</a>> wrote: > Hello > > I installed Ubuntu server 14.04.3 a lot of times today. > My setup is 2 HDD in RAID 1, /boot, root and swap partitions. > If I install Ubuntu without a EFI partition I receive the error "This > GPT partition label contains no BIOS Boot Partition" when grub installs > and I can't boot. > > If I create a new partition of type EFI(RAID1) then grub install fine > but I can't boot from the system. > The Bios is in UEFI mode. > How can I fix this? Put the EFI boot partition outside the RAID? Petter -- "I'm ionized" "Are you sure?" "I'm positive." -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" rel="noreferrer" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </blockquote></div>