On Sat, May 11, 2019 at 02:05:25PM +0200, Thomas Schmitt wrote: > > I will continue testing the Windows 10 USB install medium: > > /dev/sdb1 * 2048 15728639 15726592 7.5G c W95 FAT32 (LBA) > > That's not an EFI System Partition. > So i assume the USB stick boots by BIOS and x86 machine code in the MBR. > Unless we believe in EFI firmware that hops on arbitrary partitions ... > >
This is strange indeed. The Macbook displays “EFI Boot” in the boot selection menu. efi/boot/bootia32.efi and efi/boot/bootx64.efi exist. It could be a decoy though. I do not know how to verify on Windows if the boot used UEFI. Shall I continue testing? Regards, Florian _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel