Remove the drive letter for the system reserved partition. If you have a multi-boot system, this could cause problems depending on where your system boots from.
To remove the drive letter and hide the partition from explorer and my computer:
Open Computer management on the local computer by right clicking on
Computer in Windows Explorer and choose
manage. Then click on
Disk Management in the left hand pane.
(Or just type
diskmgmt.msc into the run dialog)
Right click on the shaded area for
Drive D: System reserved in the lower right hand window.
Change drive letter or paths
D and click
If you receive error messages that the drive might be in use or that programs might not run correctly, don't panic. It is OK to remove the drive letter. Once a letter is not assigned, the drive will not appear in windows explorer.
This works in Windows Vista, Windows 7 and Windows 8.