Hi, i cannot make qualified proposals for the GRUB question, but stumble over your technical statements.
Nicolas George wrote: > Since mdadm can only put its superblock at the end of the device (1.0), > at the beginning of the device (1.1) and 4 Ko from the beginning (1.2), > but they still have not invented 1.3 to have the metadata 17 Ko from the > beginning or the end, which would be necessary to be compatible with > GPT, Although it would be unusually small, it is possible to have a GPT of only 4 KiB of size: - 512 bytes for Protective MBR (the magic number of GPT) - 512 bytes for the GPT header block - 3 KiB for an array of 24 partition entries. Question is of course, whether any partition editor is willing to create such a small GPT. The internet says that sfdisk has "table-length" among its input "Header lines". So it would be a matter of learning and experimenting. (Possibly i would be faster with writing the first header blocks by hand, following UEFI specs or my cheat sheet in libisofs.) > we have to partition them and put the EFI system partition outside > them. Do you mean you partition them DOS-style ? If so, then a partition of type 0xEF could be used as system partition. Probably any partition type will do, because EFI is very eager to look into any partition with FAT filesystem. Have a nice day :) Thomas
