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mvallim / live-custom-ubuntu-from-scratch

(Yes, the project is still alive 😃) This procedure shows how to create a bootable and installable Ubuntu Live (along with the automatic hardware detection and configuration) from scratch.
https://mvallim.github.io/live-custom-ubuntu-from-scratch/
GNU General Public License v3.0
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More explanation #12

Open venkisagunner93 opened 3 years ago

venkisagunner93 commented 3 years ago

Thank you for the work. I'm using your repository to create my own boot to RAM flavor.

Just wanted to get some more clarification on some of the commands. At the very end you are using grub-mkstandalone to create BIOS and UEFI image (I dont know the difference). My question is if I'm trying to partition using GPT is it enough to create only UEFI image? If so how would I modify xorriso command ? Thank you help much appreciated.

grub-mkstandalone \
   --format=x86_64-efi \
   --output=isolinux/bootx64.efi \
   --locales="" \
   --fonts="" \
   "boot/grub/grub.cfg=isolinux/grub.cfg"

sudo xorriso \
   -as mkisofs \
   -iso-level 3 \
   -full-iso9660-filenames \
   -volid "Ubuntu from scratch" \
   -eltorito-boot boot/grub/bios.img \
   -no-emul-boot \
   -boot-load-size 4 \
   -boot-info-table \
   --eltorito-catalog boot/grub/boot.cat \
   --grub2-boot-info \
   --grub2-mbr /usr/lib/grub/i386-pc/boot_hybrid.img \
   -eltorito-alt-boot \
   -e EFI/efiboot.img \
   -no-emul-boot \
   -append_partition 2 0xef isolinux/efiboot.img \
   -output "../ubuntu-from-scratch.iso" \
   -m "isolinux/efiboot.img" \
   -m "isolinux/bios.img" \
   -graft-points \
      "/EFI/efiboot.img=isolinux/efiboot.img" \
      "/boot/grub/bios.img=isolinux/bios.img" \
      "."
mvallim commented 3 years ago

Hi @venkisagunner93 ,

Do you check that https://github.com/mvallim/live-custom-ubuntu-from-scratch#alternative-way-if-previous-one-fails-create-an-hybrid-iso?

Thanks,