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glaucus

grub

  • autogen.sh (and autoreconf -vfis) require autoconf-archive
  • grub.cfg is now the default configuration file
  • grub-install option --no-floppy has been deprecated (the code returns 0 for compatibility)
  • known to break if linked with gold
  • grub-mkimage builds everything when needed
  • grub-mkrescue is not being used at all for ISO creation
  • grub-mkstandalone is a wrapper around grub-mkimage and is used to create EFI images and boots
  • Do not use -max-iso9660-filenames as it may cause buffer overflows on some systems and is not iso conformant
  • grub-mkrescue:
grub-mkrescue \
  --compress=xz \
  --disable-shim-lock \
  --themes="" \
  --core-compress=xz \
  -o glaucus.iso \
  --product-name=glaucus \
  --product-version=20230721 \
  cross
  • grub-mkimage:
grub-mkimage \
  -C xz \
  -o bootx64.efi \
  -O x86_64-efi \
  -p /boot/grub
  • grub modules for i386-efi target:
    • configfile
    • ext2
    • fat
    • iso9660
    • linux
    • multiboot
    • normal
    • ntfs
    • part_apple
    • part_gpt
    • part_msdos
    • search
    • search_fs_file
    • search_fs_uuid
  • grub uses i386-efi modules for i386-pc and adds biosdisk
  • Speed up iso burning with bs=4M
  • grub requires free space (1-2 MB) before the 1st partition before installing it on an image file

References

Section titled “References”