You can use NIUBI Partition Editor Free Edition to convert Dynamic Disk to Basic without losing data on Windows 11/10. All features discussed.

Basic Disk vs Dynamic Disk. Post shows how to convert basic disk to dynamic disk OR dynamic disk to basic disk using UI, Diskpart, CMD without losing data.

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.

Not only was I able to backup the data, but I was also able to convert the drive from Dynamic to Basic using the tool. Great find. I recovered a good 120GB worth of work that I have now backed up.