The System Reserved partition contains two important things: What Does the System Reserved Partition Do? The partition is also created on Windows Serer 2008 R2 and newer Server versions of Windows.
The System Reserved partition was introduced with Windows 7, so you won’t find it on previous versions of Windows. RELATED: Understanding Hard Drive Partitioning with Disk Management
Windows doesn’t normally assign a drive letter to these partitions, so you’ll only see them when you use Disk Management or similar utility. Windows 7, 8, and 10 create a special “System Reserved” partition when you install them on a clean disk.
