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Select Disk Management (listed under Storage).Determine the disknumber assigned to the GPT-protected drive.

You must open Disk Management and document the Disk Number of the drive containing the GPT Protective partition, as you will need this information later in the procedure. It is highly recommended that you backup any/all critical data on the drive before proceeding. This procedure not only removes the drive's partition, but also removes the Drive Signature. The following procedure provides the steps for cleaning a GPT Protective Partition from a hard disk drive connected to an existing Windows XP (or newer), 32-bit Operating System. To prepare this drive, you will need to use the Windows diskpart command-line utility. Normal Disk Management facilities will not overcome this issue. This is because the internal or external hard disk was previously prepared on either a Windows or Macintosh computer with a GPT partition. The drive cannot be repartitioned and formatted in this state. When connecting an internal and/or and external hard drive to a Windows XP (or newer), 32-bit operating system, you may find your drive is inaccessible and that Disk Management reports that the drive has a GPT Protective Partition on it. All Intel-based Macs require a GPT partition on a boot volume, whether it be internal or external. GUID Partition Table (GPT) partitions are also found in Mac OS X versions 10.4.6 and newer. Note: For more comprehensive information on GPT Protective Partitions, refer to the following Microsoft link: GPT partitions enable this limit to be exceeded. In a nutshell, GPT Partition was developed to get around known, MBR partition size issues the maximum size for a MBR partiton is 2 Terabytes (TB). The GUID Partition Table (GPT) Scheme was implemented under Microsoft Windows XP 圆4 edition, Windows Server 2003 (64-bit), Windows Server 2003 SP1 (all versions), Windows Vista, Windows 7+ Access to a partition is controlled by the system firmware before the system boots the operating system, and then by the operating system after it starts. Partitions are seen by the system firmware and the installed operating systems. GPT provides a more flexible mechanism for partitioning disks than the older Master Boot Record (MBR) partitioning scheme that has been common to PCs.Ī partition is a contiguous space of storage on a physical or logical disk that functions as though it were a physically separate disk. The GUID Partition Table (GPT) was introduced as part of the Extensible Firmware Interface (EFI) initiative. This article will discuss how to overcome this issue.

This will mean that you cannot repartition or reformat the drive. Sometimes, after connecting an internal or external hard drive to your system, Windows Disk Management says that it is prepared with a GPT Protective Partition.