![]() Right-click the disk and choose “Convert to MBR Disk”. Note: If there are two or more partitions on the hard drive, delete them one by one via the steps presented above.Īfter you deleted all partitions on the GPT disk, you can convert it to MBR. After a while, the partition will be removed. You’ll be prompted that all data on the partition will be erased. Right-click the partition on the disk that is going to be converted to MBR, and choose “Delete Volume”. ✔ Part 2: Delete all partitions on the GPT disk (All data on the disk will be erased). Back up all necessary data saved on the GPT disk. To solve the "Convert to MBR Disk" option disabled issue, you can delete all partitions on the issue and then make the conversion. When the disk is not empty, you will be unable to convert it to MBR in Disk Management. When you run the Disk Management and right-click the GPT disk, the option of “Convert to MBR Disk” may be grayed out.įix Convert to GPT Disk greyed out "Convert to MBR Disk" greyed out in Disk ManagementĪt this time, what occurs to you is to convert to MBR with Disk Management-a built-in partition tool for windows. We make a list to help you make a decision according to your situation. That is to say, if you want to use a GPT disk in the previous systems or 32-bit systems above mentioned, you need to convert it to MBR partition style. And Windows 11 asks users to enbale UEFI boot mode, so if you wish to upgrade to Windows 11 later, you'd better use a GPT disk. Only later systems support GPT disk as boot disk, such as Windows 7 64-bit, Windows 8 64-bit, Windows 10 64-bit. In these systems, a GPT disk cannot be accessed as it displays as GPT protective partition. Then, why do you need to change the partition style of a disk from GPT to MBR?īecause GPT partition is not supported by Windows 95/98/ME, Windows NT4, Windows 2000, Windows 2003 32-bit, and Windows XP 32-bit version. It’s common to convert MBR disk to GPT since GPT has so many advantages aforementioned. Besides, there is a self-contained backup on the GPT disk if the original one is damaged, it can be restored with the backup. The partition size of the MBR disk is up to 2TB and GPT nearly has no limitation. ▶ MBR disk supports up to four primary partitions and GPT disk almost unlimited number. Therefore, the GPT disk and MBR disk present great differences in performance. ▶ GPT disk applies globally unique identifier partition table layout, sourced from EFI, offering a more flexible disk partition mechanism while MBR disk employs master boot record layout. ![]() Convert to MBR greyed out in Disk Management.
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