Windows 11/10 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
This is reported mostly when the user is trying to extend a specific disk-partition. In doing so, one might have to borrow some unallocated space from the original volume.
Users 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.
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.
This enters Disk Management utility
It lists available disks
select disk #
It selects the GPT disk – replace # with the actual disk number
It formats the disk
This will convert the GPT disk into MBR
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:
select disk #
select partition #
Restart the system and test for the error. It should get resolved by now.
3] Use the AOMEI Partition Assistant Professional
Download and use the AOMEI Partition Assistant Professional. It is not free but it offers a Trial period so you can use it.
- Run the AOMEI Partition Assistant on your system. Its interface will show the status of the hard drives and disk partitions.
- 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.”
- 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!