Installed win7 into the Recovery partition by accident.

I goofed up.  I have a Studio 1555 that I needed to reinstall Win 7 onto.  Dell Tech Support could not find any signs of Win 7 having a re-install package already on the machine so they sent me a new disc.  However I screwed up and installed the Win OS onto my HDD but into a parition called the 'Recovery" partition. I later reinstalled it onto the primary partition but now when I boot up, I stop at screen called the "Windows Boot Manager" which is listing two installs of win7, one on the recovery drive install and one on the much larger primary partition.  I use the second install which goes to the primary partition but the recovery partition is so small the Win7 OS is talking up most of the free space and constantly sending me messages that the drive is almost full.  How can I delete the version of Win 7 on the recovery partition and stop the constant messages from the control system that says my disk is almost full. It is also showing up with a letter to identify itself which never showed up better.  Also,what is the recovery partition supposed to be used for?  I don't think it ever worked or was used, as I backup to a network storage device.