Selected GPT formatted disk partition is not of type PARTITION_BASIC_DATA_GUID

Windows 10 streamlined the process of using unused space in disk partitions. Making further partitions became easier. But the new structure hasn’t been bug-free.

When you try to format raw space or to create a new partition out of the unallocated space on your hard drive in Disk Management, you might get the following error message:

The selected GPT formatted disk contains a partition which is not of type PARTITION_BASIC_DATA_GUID and is both preceded and followed by a partition type PARTITION_BASIC_DATA_GUID

The Selected GPT Formatted Disk Contains A Partition Which Is Not Of Type ‘PARTITION_BASIC_DATA_GUID’.

The selected GPT formatted disk contains a partition which is not of type PARTITION_BASIC_DATA_GUID

This is reported mostly when the user is trying to extend a specific disk-partition. Doing so, one might have to borrow some unallocated space from the original volume.

The user facing such an error must have probably restored a backup from a smaller GPT disk. The disk to which the backup was being restored must have been using MBR partition table before. Doing so causes the GPT partition table to overwrite the data on the destination drive.

To resolve this issue, the user needs to convert the GUID Partition Table disk to MBR. This can be done using DISKPART.

1] Use the DISKPART to convert the GPT Disk to MBR Disk

Press Win   and select Command Prompt (Admin). Run the following commands one by one, to convert GPT disk volume to MBR.

diskpart

This enters Disk Management utility

list disk 

It lists available disks

select disk #

It selects the GPT disk – replace # with actual disk number

clean

It formats the disk

convert mbr

This will convert GPT disk into MBR

exit

Exit from diskpart tool

2] Convert GPT disk partition on GPT disk volume into MBR

Press Win   and select Command Prompt (Admin). Run the following commands one by one:

diskpart
list disk
select disk #
list partition
select partition #
clean
convert mbr
exit

Restart the system and test for the error. It should get resolved by now.

3] Use the AOMEI Partition Assistant Professional

Download the use the AOMEI Partition Assistant Professional. It is not free but it offers a Trial period so you can use it.

AOMEI Partition Assistant Professional

1] Run the AOMEI Partition Assistant on your system. Its interface will show the status of the hard drives and disk partitions.

2] In the list of disk partitions, check the disk which gave you the error, right-click on it and click on “Convert to MBR Disk.”

3] Click OK, then Yes and the Apply to confirm the process.

Once the AOMEI Partition Assistant completes the process, it will reboot the system automatically.

Hope this helps!

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Karan Khanna is a passionate Windows 10 user who loves troubleshooting Windows problems in specific and writing about Microsoft technologies in general.