What is a system's UUID value and how to change it?

Solution Verified - Updated -


  • What is the meaning of a system's UUID?

    • /sys/devices/virtual/dmi/id/product_uuid file value (RHEL 6, 7, 8 9)
    • UUID field value in the dmidecode output,

          Getting SMBIOS data from sysfs.
          System Information
          Manufacturer: <VendorName>
          Product Name: <ModelName>
              Serial Number: <SerialNumber>      
          UUID: 12345678-1234-1234-1234-123456789abc  <==
    • system.hardware.uuid in the lshal output (RHEL6);

  • Can the motherboard's UUID be changed if necessary?


  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6

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