“The operation you selected will convert the selected basic disk(s) to dynamic disk(s). If you convert the disk(s) to dynamic, you will not be able to start installed operation systems from any volume on the disk(s) (except the current boot volume). Are you sure you want to continue?”
This often occurs when you have so many partitions on your single drive. So if you accidentally convert your basic disk to dynamic then this tutorial will help you to revert the process .Yes using this tip you can convert dynamic disk back to basic disk without any data loss.