The System Reserved partition consumes 100 MB of space on Windows 7, 350 MB of space on Windows 8, and 500 MB of space on Windows 10.
The partition is typically created during the Windows installation process, just before the installer allocates space for the main system partition.
Bear in mind that you’re still not saving the entire 100 MB, 350 MB, or 500 MB that the partition would have taken.
The boot files instead must be installed on your main system partition.
You really shouldn’t mess with the System Reserved partition—it’s easiest and safest to just leave it be.
The partition is also created on Windows Serer 2008 R2 and newer Server versions of Windows.The results of the famous anti-virus program should be more trust.Why would you want to disable or turn off the Windows Boot Manager?Windows 7, 8, and 10 create a special “System Reserved” partition when you install them on a clean disk.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.
To do this, you’ll need to use any disk-partitioning software except the graphical one in the Windows installer.