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.

What does GUID partition table actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

If Disk Management Tool displays Disk 1, Unknown Not Initialized then it means that Windows 11/10 can’t the initialize the disk. Here is how you can fix the issue.

Also, do note that according to this article from Apple, it might be sufficient to clone or install the system to an external GUID-partitioned disk, boot from that, and install the firmware update ...

Now with a little bit of searching I've found a Windows based tool that claims it can recover a GUID partition table called Partition Guru Professional Edition (the free version does not handle ...

The scheme defines the overall organization of the drive, which can feel pretty obscure, because you rarely need to change it. You can select among GUID Partition Map, Master Boot Partition, and ...