From 3653fbd695892b9a443ce465fbb04123353df9e5 Mon Sep 17 00:00:00 2001 From: Steev Klimaszewski Date: Fri, 24 Jul 2026 06:30:54 -0500 Subject: [PATCH] Support aarch64 for GRUB and Limine EFI installation (#4641) On aarch64 both the GRUB and Limine installers assume x86 and fail. GRUB names its EFI target 'arm64', but platform.machine() returns 'aarch64', so passing --target=aarch64-efi is rejected. Map aarch64 to the arm64 target name expected by grub-install. Limine ships architecture-specific default EFI binaries: BOOTAA64.EFI on aarch64 versus BOOTIA32.EFI and BOOTX64.EFI on x86. Select the correct binaries in the three places that reference them: when copying them into the ESP, when building the pacman hook that refreshes them on update, and when choosing the 64-bit EFI boot menu loader path. Co-authored-by: Steev Klimaszewski --- archinstall/lib/installer.py | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/archinstall/lib/installer.py b/archinstall/lib/installer.py index 53f9841c..5c0e0880 100644 --- a/archinstall/lib/installer.py +++ b/archinstall/lib/installer.py @@ -1355,7 +1355,7 @@ class Installer: boot_dir = boot_partition.mountpoint add_options = [ - f'--target={platform.machine()}-efi', + f'--target={"arm64" if platform.machine() == "aarch64" else platform.machine()}-efi', f'--efi-directory={efi_partition.mountpoint}', *boot_dir_arg, '--bootloader-id=GRUB', @@ -1489,15 +1489,19 @@ class Installer: efi_dir_path.mkdir(parents=True, exist_ok=True) + efi_binaries: tuple[str, ...] + if platform.machine() == 'aarch64': + efi_binaries = ('BOOTAA64.EFI',) + else: + efi_binaries = ('BOOTIA32.EFI', 'BOOTX64.EFI') + try: - for file in ('BOOTIA32.EFI', 'BOOTX64.EFI'): + for file in efi_binaries: (limine_path / file).copy_into(efi_dir_path) except Exception as err: raise DiskError(f'Failed to install Limine in {self.target}{efi_partition.mountpoint}: {err}') - hook_command = ( - f'/usr/bin/cp /usr/share/limine/BOOTIA32.EFI {efi_dir_path_target}/ && /usr/bin/cp /usr/share/limine/BOOTX64.EFI {efi_dir_path_target}/' - ) + hook_command = ' && '.join(f'/usr/bin/cp /usr/share/limine/{file} {efi_dir_path_target}/' for file in efi_binaries) if not bootloader_removable: # Create EFI boot menu entry for Limine. @@ -1508,7 +1512,7 @@ class Installer: raise OSError(f'Could not open or read /sys/firmware/efi/fw_platform_size to determine EFI bitness: {err}') if efi_bitness == '64': - loader_path = '\\EFI\\arch-limine\\BOOTX64.EFI' + loader_path = f'\\EFI\\arch-limine\\{"BOOTAA64.EFI" if platform.machine() == "aarch64" else "BOOTX64.EFI"}' elif efi_bitness == '32': loader_path = '\\EFI\\arch-limine\\BOOTIA32.EFI' else: