The System Reserve disk is not supposed to show up. It's used to store boot information for windows. I'd recommend going into Disk Management and removing the drive letter so it can't be tampered with.
Press 'Win+R' to open the run window, then run 'diskmgmt.msc' (no quotes) to open the disk management window. Then locate the 'System Reserve' partition, right click it and choose 'Change Drive Letters and Paths'. Highlight the letter in the list, then click 'Remove'. Click OK, then close the management window.