When you install windows 7 in freshly formatted disk drive the windows by default creates the extra partition named system reserved partition for the better performance. By default the partition is hidden and does not show in my computer window. But in case if you have that partition showing in your my computer windows you can hide it anyways using disk management.
Here is what you do to hide the system reserved partition in windows 7.
- Type diskmgmt.msc
- Right click system reserved partition
- Click change drive letters and paths..
- Remove the drive letter
- Ignore the warning and Accept
This should help you to get rid of the system reserved partition that has been bothering you.