Mostly we heard people saying Dynamic Disk to Basic disk conversion. What is Dynamic Disk?
The basic disk refers to a disk that contains partitions, such as primary/extended/logical partitions, while dynamic disk is a physical disk with features that basic disk does not have. For example, dynamic disk supports creating volumes that cross several disks (spanned and striped volumes) and creating fault-tolerant volumes (mirrored and RAID-5 volumes). Most of us may not be familiar with the volumes mentioned above; please don’t worry, we will give a detailed interpretation in the following paragraphs.
Dynamic disk does not use a Master Boot Record (MBR); it uses a 1 MB hidden database, often known as Logical Disk Manager which is located at the end of the dynamic disk, to records all information about dynamic volumes on the disk.
Dynamic disk was first introduced with Windows 2000, and it is supported in Windows XP Professional and Server 2003 but not all versions.
We can refer to this article : What is Dynamic Disk and Dynamic Volume
Note: There are five typs of dynamic volumes. They are: Simple volumes, Spanned volumes, Striped volumes, Mirrored volumes and RAID-5 volumes.