Hello, Mick and the whole World. On Tue, Apr 25, 2017 at 00:00:07 +0100, Mick wrote:
> Have a look here in case it helps: > https://wiki.archlinux.org/index.php/GRUB#RAID In the end, I went with grub2, and it has taken a lot of effort to get not very far. Grub's documentation is suboptimal. The state I've managed to get to is that grub appears to have loaded my kernel (it no longer gives an error message about it not being loaded), but then hangs without the kernel outputting even a single message. At this point, only the reset-button will do anything - Ctrl-Alt-Del does nothing. Just for reference's sake, my boot setup is EFI on GPT. I have two NVMe SSDs, which will be working together in several mdadm RAID pairs. grub can read my SSDs, reporting correctly their partitioning and being able to cat the grub configuration file. So, why, after apparently loading the kernel, does grub fail to start it? Any ideas, anybody? Here are the relevant bits of my grub.cfg: ######################################################################### # Example configuration for GRUB # Much of this example configuration was taken from the GRUB manual. # Menu timeout timeout=5 # Default menu entry default=0 # If we have a font available, start graphical output. if loadfont unifont; then echo "Loading unifont" # Output resolution for GRUB (eg. 1024x768 or 'auto'). gfxmode=auto # Output resolution for Linux (VESAFB only). # 'keep' means use the same resolution as GRUB. # For other framebuffer drivers, pass a resolution using the video= kernel param. gfxpayload=keep # Load all video drivers. insmod all_video # Switch to graphical output. terminal_output gfxterm fi # Load modules necessary to find any boot files (/boot). # Partition table(s). #insmod part_msdos insmod part_gpt # Necessary for the root partition insmod mdraid1x insmod mdraid09 # Necessary for kernel messages to show insmod efi_gop insmod efi_uga insmod font if loadfont ${prefix}/fonts/unicode.pf2 then insmod gfxterm set gfxmode=auto set gfxpayload=keep terminal_output gfxterm fi menuentry "Gentoo Linux 4.9.16-1" { # Filesystem for /boot #insmod btrfs insmod fat insmod exfat insmod ext2 #insmod xfs #insmod zfs # Search all block devices for a matching UUID (for /boot) #search --set=root --fs-uuid 33d4013a-ec25-4462-a540-8078aeb8ed17 #search --set=root (md/127) #root=(md/127) set root=(hd1,gpt2) # i.e. /boot echo "Just set root" # Load a linux kernel, passing the root filesystem and init process as parameters echo "Loading kernel..." echo "grub_platform = " $grub_platform gfxpayload=text # For debugging. linux /vmlinuz-4.9.16-gentoo root=/dev/md127 #rootfstype=btrfs init=/usr/lib/systemd/systemd echo "just loaded kernel" boot #echo "Loading initramfs..." #initrd /initramfs-4.7.2.img } ######################################################################### > -- > Regards, > Mick -- Alan Mackenzie (Nuremberg, Germany).
