On Thu, Apr 18, 2019 at 10:13:33AM +0200, Thomas Schmitt wrote: > Florian Pelz wrote: > > ... > On the 2011 Macbook I am using > > The rumors rather talk of the years up to 2010. But well ... > >
Next week I can ask others who own newer Macbooks to try out the ISO. If this only affects old Macbooks, fixing it might not be that important. > I am nearly out of ideas if not by surprise a test with Guix "i686" ISO > works. > I just tried guix-0.15.0.i686-mbr-only.iso and boot gets stuck too. Remarkably, when using the original guixsd-install-0.15.0.i686-linux.iso on the same x86_64 2011 Macbook, I can at least still boot from other partitions, the Guix USB drive merely does not show up (for Debian, it shows up as an EFI partition in the boot menu). > The last resort would be to try the weird "isohybrid --uefi" layout of > questionable MBR partition table and invalid GPT. > (This might answer the riddle why Matthew Garrett kept the GPT data > after he obviously decided for MBR partitioning.) > > But before we do that, we should make absolutely sure that EFI does > not start the bootx64.efi of the Guix ISO. Only then, the partitioning > is to blame. After bootx64.efi was started, GRUB is in charge. > So its modules in both ISOs might make the difference. > > I find a efi/boot/bootx64.efi PE executable inside efi.img on the Guix ISO. On Debian the long name is EFI/boot/bootx64.iso in capital letters; I do not know if this can make a difference. How would I check if it gets run? Regards, Florian
