Basic drives and dynamic drives are two types of hard drive configurations in Windows. Most personal PCs are configured as basic drives, which are the simplest to manage. Advanced users and IT administrators can make use of dynamic drives, which use multiple hard drives within a computer to manage data, usually for increased performance or reliability.
A basic drives use primary partitions, extended partitions, and logical drives to organize data. A formatted partition is also called a volume (the terms volume and partition are often used interchangeably). In this version of Windows, basic drives can have either four primary partitions or three primary partitions and one extended partition. The extended partition can contain multiple logical drives (up to 128 logical drives are supported).
Dynamic drives can contain
a large number of dynamic volumes (approx. 2000) that function like the primary
partitions used on basic drives. In some versions of Windows, you can combine
separate dynamic hard drives to a single dynamic volume (spanned volume), split data
among several hard drives (striped volume) for increased performance, or duplicate
data among several hard drives (mirrored volume) for increased reliability.
Article Sources: What are basic and dynamic disks?
Change dynamic drive to basic
We can convert between dynamic drive and basic drive. Windows built-in disk manager can easily change basic drive to dynamic, but it can not convert dynamic drive to basic unless you delete all volumes on the dynamic disk. Therefore, how to convert dynamic drive to basic drive without loss of data? This is a particular topic. You need to an 3rd-party software, AOMEI Dynamic Disk Converter can achieve this job perfectly, it can well work on XP/2000/Vista/Windows 7/8 and Server 2003/2008/2011/2012. This converter only takes 3 to 10 seconds to complete the conversion. Please refer to the following screen shot.
From the above graph, please choose "Convert a dynamic disk back to basic disk". The method 1 will safely, directly and time-saving revert a dynamic drive back to basic and protect all data. The method 2 can sector by sector clone any dynamic volume to basic partition high efficiently.