On Sun, Oct 28, 2012 at 01:39:54PM +0100, Paweł Sikora wrote: > > Booted without problems :) > > so, can you wraite a mini-howto for migrating from grub-legacy to grub2-eufi > for machines with "/" on lvm on raid ? :)
I don't have EFI on my laptop. And no RAID, but Luks. Migrating from grub-legacy to grub2+grub2-platform-pc for a machine with / on LVM on Luks: poldek> uninstall grub poldek> install grub2 grub2-platform-pc poldek> ^D # vim /boot/grub/grub.cfg :new /boot/grub/menu.lst.rpmsave tutaj sobie skopiować swoje ustawienia ze starego gruba do składni nowego :wq # /sbin/grub-install --no-floppy '(hd0)' Earlier, for some experience, I have converted my HDD partitions from MBR to GPT, but it is another story, not needed for GRUB2/PC. Migrating a server with / on LVM on hardware RAID from GRUB-legacy/BIOS to GRUB2/EFI was much more complicated… – first I had to get GPT partitioning… but there was not even place for GPT, because someone (or 'parted' rather) have put the first partition on the first sector after MBR – then I had to recompile kernel a few times until it worked (I don't use PLD kernel there, most features were disabled) – I have Xen there – it made things both easier (Xen 4.2 boots from EFI with no problems and no extra configuration) and harder – Linux started under Xen does not see EFI – efibootmgr won't work and grub won't install itself as the default boot loader ('cp /boot/efi/EFI/grub/grubx64.efi /boot/efi/EFI/BOOT/BOOTX64.EFI' helps). But the short tutorial would be (I have no idea if the software RAID needs special handling here): 1. Make sure your disk has GPT and an EFI system partition. In the simplest case running 'gdisk' and adding the EFI system partition should do. But in real life things are more complicated. I managed to resize and move both /boot and LVM partitions with gdisk/e2resizefs/pvmove/etc with no data loss (by removing them, recreating smaller, creating temporary partitions behind them, moving data, removing and recreating target partitions in the right places, moving data gain). But it was a test system that could be destroyed. I would not dare that on a production system ;) You may also want to add a 'BIOS boot partition' somewhere at the beginning of the disk too, to install grub2 for BIOS booting. 2. Install grub2 and grub2-platform-efi and 'efibootmgr' 3. mount the EFI partition at /boot/efi 4. 'grub-install --target=x86_64-efi --efi-directory=/boot/efi' 4a. optionally: 'grub-install --no-floppy --target=i386-pc (hd0)' to have the system bootable via BIOS too. 5. 'cp /boot/efi/EFI/grub/grubx64.efi /boot/efi/EFI/BOOT/BOOTX64.EFI' 6. edit /boot/grub/grub.cfg it may be good idea to add (otherwise grub complains 'the OS won't have console' or something like that): -- cut -- insmod efi_gop insmod efi_uga insmod font if loadfont dejavu then insmod gfxterm set gfxmode=auto set gfxpayload=keep terminal_output serial gfxterm fi -- cut -- and: mkdir -p /boot/grub/fonts grub-mkfont -o /boot/grub/fonts/dejavu.pf2 /usr/share/fonts/TTF/DejaVuSans.ttf 7. Reboot, the system should boot via EFI/GRUB2 8. make the proper EFI boot loader entry: - modprobe efivars - grub-install --target=x86_64-efi --efi-directory=/boot/efi – rm /boot/efi/EFI/BOOT/BOOTX64.EFI 9. reboot again Greets, Jacek _______________________________________________ pld-devel-en mailing list pld-devel-en@lists.pld-linux.org http://lists.pld-linux.org/mailman/listinfo/pld-devel-en