The solution was to replace the 42 with 07 in 01d0 (right below 01c0). Then run chkdsk c: /f. <BR><BR>My disk is now back to basic and shows up correctly in disk management and it took no time at all.

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.

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.