Partition Type GUID for GPT UEFI Ext4 Partition
When partitioning a disk using the GPT (GUID Partition Table) scheme under a UEFI (Unified Extensible Firmware Interface) environment, it's important to specify the correct partition type GUID for each partition. In the case of an Ext4 partition, the partition type GUID should be set to the appropriate value.
What is GPT?
GPT (GUID Partition Table) is a standard for the layout of partition tables on a physical hard disk. It uses GUIDs (Globally Unique Identifiers) to identify each partition and other data structures on the disk. GPT is more flexible and reliable than the older MBR (Master Boot Record) partitioning scheme and is required for disks that are larger than 2TB.
What is UEFI?
UEFI (Unified Extensible Firmware Interface) is a modern firmware interface for computers that replaces the older BIOS (Basic Input/Output System). UEFI provides a more secure and flexible environment for partitioning and bootstrapping a computer's operating system. GPT is the preferred partitioning scheme for UEFI.
What is Ext4?
Ext4 (Fourth Extended File System) is a widely used file system for Linux operating systems. It is an extension of the ext3 file system and offers several improvements, such as support for larger file systems and improved performance.
Partition Type GUID for Ext4 Partition
When partitioning a disk using GPT, each partition should be assigned a unique partition type GUID. The partition type GUID for an Ext4 partition is typically set to:
C12A7328-F81F-11D2-BA4B-00A0C93EC93B
This GUID identifies the partition as an Ext4 partition in a GPT partition table.
Setting the Partition Type GUID
When partitioning a disk using GPT, the partition type GUID can be set using a partitioning tool, such as:
fdiskpartedgdisk
The exact steps for setting the partition type GUID will vary depending on the tool used. However, the general process is similar:
- Identify the partition you want to modify.
- Display the partition's current properties, including the partition type GUID.
- Change the partition type GUID to the value for Ext4.
- Write the changes to the partition table and verify that the changes were saved successfully.
In a GPT partition table under UEFI, each partition should have a unique partition type GUID. The partition type GUID for an Ext4 partition should be set to:
C12A7328-F81F-11D2-BA4B-00A0C93EC93B
This GUID identifies the partition as an Ext4 partition and ensures that the operating system can properly mount and access the partition.