Anoperating systemuses it to differentiate among storage devices on your gear.

Other terms for disk signature include disk identity, unique identifier, HDD signature, and fault tolerance signature.

Open Command Promptand enterdiskpart.

disk signature command prompt command

When that command completes, enterlist disk.

Enterselect disk 0(but choose the number that corresponds to the disk you’re interested in).

Finally, enteruniqueid diskto display the disk signature for the disk you just chose.

disk management

For MBR partitioned disks, the signature is a 4 byte value presented as an 8 characterhexstring.

A similar scenario is whenbackup softwareorvirtualization toolsmake a virtual hard drive from a physical hard drive.

This process creates a new signature.

This process is common only in older systems and tools.

Most modern operating systems and partitioning programs keep the existing signature.

For a tutorial on changing a disk signature (without losing all the drive’s data), seeHowToHaven.

FAQ

Go toControl Panel>System and Security>WindowsTools>Computer Management>Disk Management.

it’s possible for you to alsoopen Disk Management from Command Prompt.