Hi, > Regular El Torito then.
At least grub-mkrescue makes it that way. Better ask a grub-devel for advise and options. > UEFI booting requires a GPT and a special partition, which would > probably be impossible to implement along with the MBR hack for hybrid > booting. I am clueless enough to look into wikipedia about GUID Partition Table. The is room for a "Protective MBR" of 512 bytes. So somebody would need to teach me how to announce the range of the ISO image and the range of the FAT partition in a GPT. Further one would have to discuss with Vladimir Serbinenko at grub-devel about the layout of the first 32 kB of the ISO image, where MBR, GPT, and GRUB2 code have to reside side-by-side. Finally one would have to explore the chances to get Debian bootable ISO images onto GRUB2 rather than ISOLINUX. Then one would develop a friendly fork of grub-mkrescue as proof-of-concept of the various bootabilities in one single ISO image: - amd64 BIOS from CD - amd64 BISO from USB stick - amd64 UEFI from CD - amd64 UEFI from USB stick For this we'd need to enhance xorriso by GPT production. Alternatively one could find out how far SYSLINUX is with UEFI support. Or whether a ISOLINUX BIOS setup can be combined with a GRUB setup in a FAT partition. (ISOLINUX occupies no space in the first 32 kB of the image. So the GPT would have room there.) I assume this would be easier to integrate into the existing Debian image production. Have a nice day :) Thomas -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org