Convert a gpt protective partition

I recently put a 64 bit Vista formatted Drive into my XP HTPC box and found it was unreadable and could not be formatted.  Computer Management displayed the drive as a GPT Protective Partition. Unfortunately Windows XP cannot read or write this type of filesystem let alone mount the drive. A GPT disk uses the GUID partition table (GPT) disk partitioning system.

Your Options are:

  • Run the DOS command line “cmd” in Start – Run
  • Type DiskPart” at the prompt.
  • “list disk” will show all disks on your machine and find the Disk number you want to convert.
  • Change the focus to the required disk by entering the following “select disk X″ where X is the disk number you require to convert.
  • Entering “clean” command to remove GPT disk from the current in-focus disk by zeroing sectors or if you are using Windows Vista or 2003 server enter “convert mbr”

or Using the Windows interface

  • Back up or move all volumes on the basic GUID partition table (GPT) disk you want to convert into a master boot record (MBR) disk. If the disk does not contain any partitions or volumes, skip to step 2.
  • For more information about backing up volumes, see Related Topics.
    Open Computer Management (Local).
  • In the console tree, click Computer Management (Local), click Storage, and then click Disk Management.
  • If the disk does not contain any partitions or volumes, skip to step 5. Otherwise, right-click the any volumes on the disk and then click Delete Volume.
  • Right-click the GPT disk that you want to change into an MBR disk, and then click Convert to MBR disk.

Windows XP Disc support Windows FAQ.

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