How to change from using systemdboot to Grub

Can we see the full contents of /boot/grub/grub.cfg

That would be


# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}

function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod ext2
search --no-floppy --fs-uuid --set=root ae3cb8f6-3d67-44a0-8de7-5090a5e016c5
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=en_US
  insmod gettext
fi
terminal_input console
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=5
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch Linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-ae3cb8f6-3d67-44a0-8de7-5090a5e016c5' {
        load_video
        set gfxpayload=keep
        insmod gzio
        insmod part_gpt
        insmod ext2
        search --no-floppy --fs-uuid --set=root ae3cb8f6-3d67-44a0-8de7-5090a5e016c5
        echo    'Loading Linux linux ...'
        linux   /boot/vmlinuz-linux root=UUID=ae3cb8f6-3d67-44a0-8de7-5090a5e016c5 rw  nowatchdog nvme_load=YES loglevel=3
        echo    'Loading initial ramdisk ...'
        initrd  /boot/intel-ucode.img /boot/initramfs-linux.img
}
submenu 'Advanced options for Arch Linux' $menuentry_id_option 'gnulinux-advanced-ae3cb8f6-3d67-44a0-8de7-5090a5e016c5' {
        menuentry 'Arch Linux, with Linux linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-advanced-ae3cb8f6-3d67-44a0-8de7-5090a5e016c5' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod ext2
                search --no-floppy --fs-uuid --set=root ae3cb8f6-3d67-44a0-8de7-5090a5e016c5
                echo    'Loading Linux linux ...'
                linux   /boot/vmlinuz-linux root=UUID=ae3cb8f6-3d67-44a0-8de7-5090a5e016c5 rw  nowatchdog nvme_load=YES loglevel=3
                echo    'Loading initial ramdisk ...'
                initrd  /boot/intel-ucode.img /boot/initramfs-linux.img
        }
        menuentry 'Arch Linux, with Linux linux (fallback initramfs)' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-fallback-ae3cb8f6-3d67-44a0-8de7-5090a5e016c5' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod ext2
                search --no-floppy --fs-uuid --set=root ae3cb8f6-3d67-44a0-8de7-5090a5e016c5
                echo    'Loading Linux linux ...'
                linux   /boot/vmlinuz-linux root=UUID=ae3cb8f6-3d67-44a0-8de7-5090a5e016c5 rw  nowatchdog nvme_load=YES loglevel=3
                echo    'Loading initial ramdisk ...'
                initrd  /boot/intel-ucode.img /boot/initramfs-linux-fallback.img
        }
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/25_bli ###
if [ "$grub_platform" = "efi" ]; then
  insmod bli
fi
### END /etc/grub.d/25_bli ###

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
if [ "$grub_platform" = "efi" ]; then
        fwsetup --is-supported
        if [ "$?" = 0 ]; then
                menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
                        fwsetup
                }
        fi
fi
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/35_fwupd ###
### END /etc/grub.d/35_fwupd ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###

Can you share a picture of what you see when it fails to boot?

Chroot into your system, uncomment the following line in /etc/default/grub:
From this:
#GRUB_ENABLE_CRYPTODISK=y
To this:
GRUB_ENABLE_CRYPTODISK=y
Then regenerate grub:
grub-mkconfig -o /boot/grub/grub.cfg
Then reboot and see if you get prompted for a passphrase to unlock your root partition.

Same result

Do the same again and try changing this line.
From this:
GRUB_CMDLINE_LINUX_DEFAULT="nvme_load=YES rw root=UUID=ae3cb8f6-3d67-44a0-8de7-5090a5e016c5"
To this:
GRUB_CMDLINE_LINUX_DEFAULT="nvme_load=YES rw rd.luks.uuid=ae3cb8f6-3d67-44a0-8de7-5090a5e016c5"
Then regenerate grub:
grub-mkconfig -o /boot/grub/grub.cfg
Reboot again, any changes?

That was already changed to nowatchdog nvme_load=YES loglevel=3" earlier, which appears to be ok because the grub.cfg gets the right uuid in the menuentry.

does this time out and take you to a prompt?

I let it run for half an hour earlier. Continues seemingly indefinitely.

I installed a vm to compare it to your grub config and installer uses " rd.luks.uuid= in the grub config. What files are in /etc/dracut.conf.d?

Hmm, might be worth a try then. Also, nothing. It’s empty.

That is only for encrypted installs. I don’t see anything indicated that this install is encrypted.

That isn’t normal. We deploy config there and so does the dracut package.

Yeah the coin just dropped, for some reason because of it being stuck at the root partition job I thought it was an encrypted partition. I guess it was a really long day. :face_with_hand_over_mouth:

Don’t worry. It’s currently 4:28am for me :smiling_face_with_tear: Tired is the only state to be in when fixing bugs.

2 Likes

In the vm I installed there are two files, one for encryption which isn’t the case as you just made me realize and this file.

cat /etc/dracut.conf.d/eos-defaults.conf 
omit_dracutmodules+=" network cifs nfs brltty "
compress="zstd"

Maybe add that and then run dracut -f

You can undo what I said here then, since I here I still though it was an encrypted device you were booting from.

dracut -f returns

dracut: Cannot find module directory /lib/modules/6.1.9-arch1-2/
dracut: and --no-kernel was not specified

Not sure what to make of that first one, since I updated earlier today so everything vital should be there and good.

Don’t use dracut -f, use dracut-rebuild