But now it does not read it correctly. In Disk Management the drive shows up as a dynamic disk. I did some reading and it seems that the Windows 7 machine will only read it as a Basic disk.

Learn how to convert MBR to GPT disk without data loss in Windows 11/10, using Diskpart, Gptgen, or AOMEI Partition Assistant. MBR disks support only 4 partition tables.

MBR2GPT.exe will convert a Windows 11/10 computer from legacy BIOS to UEFI disk partitioning. Convert a disk from MBR to GPT partition style.

FAQ: HOWTO: Convert a dynamic disk back to a basic disk without data loss <br><br>I think we may need to re-org stuff to make a HOWTO section or something.