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mkarchiso: add more details to the comment in grub-embed.cfg

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Link to the upstream issue report.
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nl6720 2023-01-25 23:05:48 +02:00
parent 7c6f266ec9
commit 40e09767f0
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1 changed files with 5 additions and 2 deletions
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archiso/mkarchiso
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@ -590,10 +590,13 @@ _make_common_bootmode_grub_cfg(){
efiboot_files+=("${work_dir}/grub/"
"${profile}/grub/"!(*.cfg))
# Prepare grub.cfg that will be embedded inside the GRUB binaries
IFS='' read -r -d '' grubembedcfg <<'EOF' || true
if ! [ -d "$cmdpath" ]; then
# On some firmware, GRUB has a wrong cmdpath when booted from an optical disc.
# https://gitlab.archlinux.org/archlinux/archiso/-/issues/183
# On some firmware, GRUB has a wrong cmdpath when booted from an optical disc. During El Torito boot, GRUB is
# launched from a case-insensitive FAT-formatted EFI system partition, but it seemingly cannot access that partition
# and sets cmdpath to the whole cd# device which has case-sensitive ISO 9660 + Rock Ridge + Joliet file systems.
# See https://gitlab.archlinux.org/archlinux/archiso/-/issues/183 and https://savannah.gnu.org/bugs/?62886
if regexp --set=1:isodevice '^(\([^)]+\))\/?[Ee][Ff][Ii]\/[Bb][Oo][Oo][Tt]\/?$' "$cmdpath"; then
cmdpath="${isodevice}/EFI/BOOT"
fi