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uniqueid

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Displays or sets the GUID partition table (GPT) identifier or master boot record (MBR) signature for the basic or dynamic disk with focus. A basic or dynamic disk must be selected for this operation to succeed. Use the select disk command to select a disk and shift the focus to it.

Syntax

uniqueid disk [id={<dword> | <GUID>}] [noerr]

Parameters

Parameter Description
id={<dword> | <GUID>} For MBR disks, this parameter specifies a 4-byte (DWORD) value in hexadecimal form for the signature. For GPT disks, this parameter specifies a GUID for the identifier.
noerr For scripting only. When an error occurs, DiskPart continues to process commands as if the error didn't occur. Without this parameter, an error causes DiskPart to exit with an error code.

Examples

To display the signature of the MBR disk with focus, type:

uniqueid disk

To set the signature of the MBR disk with focus to the DWORD value 5f1b2c36, type:

uniqueid disk id=5f1b2c36

To set the identifier of the GPT disk with focus to the GUID value baf784e7-6bbd-4cfb-aaac-e86c96e166ee, type:

uniqueid disk id=baf784e7-6bbd-4cfb-aaac-e86c96e166ee