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Showing content from https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/set-id below:

set id | Microsoft Learn

Changes the partition type field for the partition with focus. This command doesn't work on dynamic disks or on Microsoft Reserved partitions.

Important

This command is intended for use by original equipment manufacturers (OEMs) only. Changing partition type fields with this parameter might cause your computer to fail or be unable to boot. Unless you are an OEM or experienced with gpt disks, you should not change partition type fields on gpt disks by using this parameter. Instead, always use the create partition efi command to create EFI system partitions, the create partition msr command to create Microsoft Reserved partitions, and the create partition primary command without the ID parameter to create primary partitions on gpt disks.

Syntax

set id={ <byte> | <GUID> } [override] [noerr]

Parameters Parameter Description <byte> For master boot record (MBR) disks, specifies the new value for the type field, in hexadecimal form, for the partition. Any partition type byte can be specified with this parameter except for type 0x42, which specifies an LDM partition. Note that the leading 0x is omitted when specifying the hexadecimal partition type. <GUID> For GUID partition table (gpt) disks, specifies the new GUID value for the type field for the partition. Recognized GUIDs include:

EFI system partition: c12a7328-f81f-11d2-ba4b-00a0c93ec93b
Basic data partition: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7

Any partition type GUID can be specified with this parameter except the following:

Microsoft Reserved partition: e3c9e316-0b5c-4db8-817d-f92df00215ae
LDM metadata partition on a dynamic disk: 5808c8aa-7e8f-42e0-85d2-e1e90434cfb3
LDM data partition on a dynamic disk: af9b60a0-1431-4f62-bc68-3311714a69ad
Cluster metadata partition: db97dba9-0840-4bae-97f0-ffb9a327c7e1

override forces the file system on the volume to dismount before changing the partition type. When you run the set id command, DiskPart attempts to lock and dismount the file system on the volume. If override isn't specified, and the call to lock the file system fails (for example, because there is an open handle), the operation fails. If override is specified, DiskPart forces the dismount even if the call to lock the file system fails, and any open handles to the volume will stop being valid. noerr Used for scripting only. When an error is encountered, DiskPart continues to process commands as if the error did not occur. Without this parameter, an error causes DiskPart to exit with an error code. Remarks

Other than the limitations previously mentioned, DiskPart doesn't check the validity of the value that you specify (except to ensure that it is a byte in hexadecimal form or a GUID).

Examples

To set the type field to 0x07 and force the file system to dismount, type:

set id=0x07 override

To set the type field to be a basic data partition, type:

set id=ebd0a0a2-b9e5-4433-87c0-68b6b72699c7