EFI needs its own smallish partition with a fat32 filesystem
here’s my layout with just one disk:
(parted) print Model: ATA Hitachi HTS54503 (scsi) Disk /dev/sda: 320GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 512MB 511MB fat32 boot 2 512MB 316GB 316GB ext4 3 316GB 320GB 4023MB linux-swap(v1)
Now, debian does sort of support UEFI booting with the 7.2 install discs (haven’t tried 7.3 yet but should be good), but there was some extra mucking about I had to do.
Once you’ve installed, and it boots the flashing folder icon (or question mark, I forget which). Boot into rescue mode, and let debian find the right root partition, and execute a shell in that partition.
You may have to:
apt-get install grub-efi-amd64
Now we’re almost there! the installer for grub-efi-amd64 puts the boot file in /efi/EFI/debian/grub64x64.efi
And we need to put that in the right place for EFI to load it properly:
cp /boot/efi/EFI/debian/grubx64.efi /boot/efi/EFI/boot/bootx64.efi
To make sure all the configs are in the right place.
Then reboot! and you should eventually get into debian :)
If you have a white screen for ~30s after the boot chime, and you want to get rid of the wait, you’ll have to boot an OS X disk and run:
bless --device /dev/disk0s1 --setBoot --verbose
substituting the proper device node for your boot device of course.
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