System Reserved Hard Drive Sector

My Hard Drive has a sector (Virtual Drive) named 'System Reserved.  This was set up when I loaded up Windows 7 from new.

This drive is visible to Norton Internet Security Tools and when analysed it is shown to be 15% fragmented.

However, Norton wil NOT defrag it and as time goes by, the fragmentation becomes greater.

How can this be defragmented ?  If it can't, does it matter ?