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Support AArch64 root partition type GUID #4671

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Merged
svartkanin merged 1 commit into from
Jul 27, 2026
+24 −5
Merged

Support AArch64 root partition type GUID #4671

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16 changes: 13 additions & 3 deletions archinstall/lib/disk/device_handler.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import logging
import os
import platform
from pathlib import Path

from parted import Device, Disk, DiskException, FileSystem, Geometry, IOException, Partition, PartitionException, freshDisk, getAllDevices, getDevice, newDisk
Expand All @@ -10,6 +11,7 @@
find_lsblk_info,
get_all_lsblk_info,
get_lsblk_info,
linux_root_guid,
mount,
udev_sync,
umount,
Expand All @@ -26,7 +28,6 @@
LsblkInfo,
ModificationStatus,
PartitionFlag,
PartitionGUID,
PartitionModification,
PartitionTable,
SubvolumeModification,
Expand Down Expand Up @@ -339,6 +340,7 @@ def _setup_partition(
block_device: BDevice,
disk: Disk,
requires_delete: bool,
arch: str | None = None,
) -> None:
# when we require a delete and the partition to be (re)created
# already exists then we have to delete it first
Expand Down Expand Up @@ -394,7 +396,7 @@ def _setup_partition(

if disk.type == PartitionTable.GPT.value:
if part_mod.is_root():
partition.type_uuid = PartitionGUID.LINUX_ROOT_X86_64.bytes
partition.type_uuid = linux_root_guid(arch).bytes
elif PartitionFlag.LINUX_HOME not in part_mod.flags and part_mod.is_home():
partition.setFlag(PartitionFlag.LINUX_HOME.flag_id)

Expand Down Expand Up @@ -536,11 +538,19 @@ def partition(
# don't touch existing partitions
filtered_part = [p for p in modification.partitions if not p.exists()]

arch = platform.machine()

for part_mod in filtered_part:
# if the entire disk got nuked then we don't have to delete
# any existing partitions anymore because they're all gone already
requires_delete = modification.wipe is False
self._setup_partition(part_mod, modification.device, disk, requires_delete=requires_delete)
self._setup_partition(
part_mod,
modification.device,
disk,
requires_delete=requires_delete,
arch=arch,
)

disk.commit()

Expand Down
9 changes: 8 additions & 1 deletion archinstall/lib/disk/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@
from archinstall.lib.command import SysCommand, run
from archinstall.lib.exceptions import DiskError, SysCallError
from archinstall.lib.log import debug, info, warn
from archinstall.lib.models.device import LsblkInfo
from archinstall.lib.models.device import LsblkInfo, PartitionGUID


class LsblkOutput(BaseModel):
Expand Down Expand Up @@ -196,3 +196,10 @@ def swapon(path: Path) -> None:
SysCommand(['swapon', str(path)])
except SysCallError as err:
raise DiskError(f'Could not enable swap {path}:\n{err.message}')


def linux_root_guid(arch: str | None) -> PartitionGUID:
if arch == 'aarch64':
return PartitionGUID.LINUX_ROOT_AARCH64

return PartitionGUID.LINUX_ROOT_X86_64
Comment on lines +201 to +205

@codefiles codefiles Jul 26, 2026

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I considered making this a class method of PartitionGUID but remembered this: #4461

This seems like an appropriate place anyway.

4 changes: 3 additions & 1 deletion archinstall/lib/models/device.py
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Original file line number Diff line number Diff line change
Expand Up @@ -805,9 +805,11 @@ def from_string(cls, s: str) -> Self | None:

class PartitionGUID(Enum):
"""
A list of Partition type GUIDs (lsblk -o+PARTTYPE) can be found here: https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs
A list of Partition type GUIDs (lsblk -o+PARTTYPE) can be found here:
https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs
"""

LINUX_ROOT_AARCH64 = 'B921B045-1DF0-41C3-AF44-4C6F280D3FAE'
LINUX_ROOT_X86_64 = '4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709'

@property
Expand Down