Hi, Ludovic Courtès wrote: > > I lost track of the discussion. You’re looking at a MacBook-specific > > issue, right?
Florian Pelz wrote: > As I understand it, Thomas’ work is about > - making a correct ISO image and The grub-mkrescue ISOs are correct but also sometimes inconvenient on USB stick. So rather: - Making ISO images which are more digestible for partition interpreters when presented unchanged on real storage devices. Especially for partition editors by which the user wants to add a read-write data partition to the USB stick. > - making it work on more machines. In this case it's about the Macbook EFI and mformat's partition table entry. Exotic but also typical for firmware quirks. ---------------------------------------------------------------------- In general my proposal is about getting control over the GRUB-produced files before xorriso packs them up, and over the arguments of the xorriso run. Danny pointed out that Guix ISO production software does not aim for becomming expert for iso bootloaders. But the Macbook EFI behavior and the Linux partition table complaints do not demand deep knowledge of bootloaders. The remedies just need the opportunity to make small adjustments to the work of grub-mkrescue. Where such remedies come from, is a different question. Count on frustration-tolerant users and curious bystanders. The shell script implementation is somewhat questionable. We could use it for exploring the best variation and then implement that variation in a less tolerant programming language with less outer influences. I asked Danny, whether the download servers could offer two partition table variations of the ISOs: GPT and MBR (both with APM/HFS+). Goal would be to gain experience with MBR and to finally replace GPT by that layout. He expressed the hope that other members of Guix could answer this. Have a nice day :) Thomas