The operation you selected will convert the selected basic disk to dynamic disk (MBR Partition)

Basic disk which has an MBR partition style is converted to Dynamic disk. How? & Why?
How ?: When i try to create a new simple volume from the every unallocated space, Disk Management showing the message, the operation you selected will convert the selected basic disk(s) to dynamic disk(s).
Why ?: My Basic disk has an MBR partition style and i have reached maximum partitioning limit. Since, The total data storage space of a PC HDD on which MBR partitioning is implemented can contain at most four primary partitions, or alternatively three primary partitions and an extended partition.
That's why when i try to create a new simple volume from the remaining unallocated space, the basic disk is converted to dynamic.
Note: Multiboot problem will occurs. If you convert the disk(s) to dynamic, you will not be able to start installed operating systems from any volume on the disk(s). (except the current boot volume)
Note: To encourage the use of dynamic disks, multi-partition volume support was removed from basic disks, and is now exclusively supported on dynamic disks.