Sometimes, after connecting an internal or external hard drive to lớn your system, Windows Disk Management says that it is prepared with a GPT Protective Partition. This will mean that you cannot repartition or reformat the drive. This article will discuss how lớn overcome this issue.
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What is a GPT disk?
The GUID Partition Table (GPT) was introduced as part of the Extensible Firmware Interface (EFI) initiative. GPT provides a more flexible mechanism for partitioning disks than the older Master Boot Record (MBR) partitioning scheme that has been common to PCs.
A partition is a contiguous space of storage on a physical or logical disk that functions as though it were a physically separate disk. Partitions are seen by the system firmware và the installed operating systems. Access khổng lồ a partition is controlled by the system firmware before the system boots the operating system, and then by the operating system after it starts.
The GUID Partition Table (GPT) Scheme was implemented under Microsoft Windows XP x64 edition, Windows hệ thống 2003 (64-bit), Windows hệ thống 2003 SP1 (all versions), Windows Vista, Windows 7+
In a nutshell, GPT Partition was developed to get around known, MBR partition form size issues; the maximum kích thước for a MBR partiton is 2 Terabytes (TB). GPT partitions enable this limit to lớn be exceeded.
Note: For more comprehensive information on GPT Protective Partitions, refer khổng lồ the following Microsoft link:https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/windows-and-gpt-faq
GUID Partition Table (GPT) partitions are also found in Mac OS X versions 10.4.6 and newer. All Intel-based Macs require a GPT partition on a boot volume, whether it be internal or external.
When connecting an internal and/or and external hard drive khổng lồ a Windows XP (or newer), 32-bit operating system, you may find your drive is inaccessible & that Disk Management reports that the drive has a GPT Protective Partition on it. The drive cannot be repartitioned và formatted in this state. This is because the internal or external hard disk was previously prepared on either a Windows or Macintosh computer with a GPT partition.
Normal Disk Management facilities will not overcome this issue. To prepare this drive, you will need to use the Windows diskpart command-line utility. The following procedure provides the steps for cleaning a GPT Protective Partition from a hard disk drive connected to lớn an existing Windows XP (or newer), 32-bit Operating System.
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This is a data destructive process. This procedure not only removes the drive"s partition, but also removes the Drive Signature. It is highly recommended that you backup any/all critical data on the drive before proceeding.
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.Determine the
disknumber assigned to lớn the GPT-protected drive.Right-click on (My) Computer.Choose
Manage.Select
Disk Management (listed under Storage).Look for the drive that is identified as GPT and note the
Disk number (such as Disk 1).
Open a Command Window. From the command prompt, type
diskpart & press
Enter. The diskpart prompt will open.From the diskpart prompt, type
list disk và press
Enter. A các mục of disks will appear in a text format. You will return to lớn the diskpart prompt.From the diskpart prompt, type
select disk disknumber (for instance, if the disk containing the GPT Protective Partition is Disk 2, you would type
select disk 2)and press
Enter. A message appears saying that the disk is selected. You will return to the diskpart prompt.From the diskpart prompt, type
clean và press
Enter. At this point the drive"s partition và signature a removed. You will return lớn the diskpart prompt.From the diskpart prompt, type
exit và press
Enter. Type
exit once more lớn close the Command Window. At this point, the internal and/or external drive can be re-initialized, partitioned and formatted.Launch Disk Management, & to initialize the disk:Use the
Initialize and Convert Disk Wizard...
-OR-Close the Wizard, right-click on the disk in question và select
Initialize Disk from the drop-down menu.Once the drive is initialized, continue using Disk Management to lớn partition & format the drive.
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