Convert Dynamic disk to Basic disk conversion

Convert Dynamic disk to Basic disk 

To change a dynamic disk back to a basic disk using the Windows interface

1. Back up all volumes on the disk you want to convert from dynamic to basic.
2. In Disk Management, right-click each volume on the dynamic disk you want to convert to a basic disk, and then click Delete Volume for each volume on the disk.
3. When all volumes on the disk have been deleted, right-click the disk, and then click Convert to Basic Disk.

or You can also convert by commands

Convert Dynamic disk to Basic disk 

To change a dynamic disk back to a basic disk using a command line

1. Back up all volumes on the disk you want to convert from dynamic to basic.
2. Open a command prompt and type diskpart.
3. At the DISKPART prompt, type list disk. Make note of the disk number you want to convert to basic.
4. At the DISKPART prompt, type select disk <disknumber>.
5. At the DISKPART prompt, type detail disk <disknumber>.
6. For each volume on the disk, at the DISKPART prompt, type select volume= <volumenumber> and then type delete volume.
7. At the DISKPART prompt, type select disk <disknumber>. Specify the disk number of the disk that you want to convert to a basic disk.
8. At the DISKPART prompt, type convert basic.