I was referring to that oddball 100 MB or 200 MB that the Windows 7 install can at times put on your hard drive. It's normally placed at the beginning of the drive, before the C partition. I didn't want it to be installed.
Although I can't personally confirm it, my research led me to believe that the oddball partition is placed on your hard drive ONLY if you are installing Windows 7 to a drive that will otherwise have only one partition on it (C) OR if your drive has some unallocated unpartitioned space on it at the time you begin the Windows 7 install.
Its unclear to me whether or not you can easily remove the oddball partition if it is installed. I saw differing opinions on that and didn't want to take the chance of it hanging around.
Like you, if the oddball were on my drive, I would be antsy about deleting it (assuming I could). So, I just chose never to have it in the first place. The only reason to delete it would be to reclaim the space that it occupied or because you just didn't like looking at it in Disk Management. Since the oddball is placed at the beginning of the drive, you would likely have to use third party tools to reclaim the space--the less I get involved with third party tools, the better.
I'd guess one easy way around the issue would be to make a C partition of say 100 GB during the install and then immediately make a D partition of ALL the remaining unallocated space. Put Windows 7 on C, and then easily delete D after you have Windows 7 installed. The point of the D partition would be simply to prevent the oddball from being installed. When you delete D after the install, you can easily expand C to grab all the space formerly occupied by D.
It may be that the oddball is NOT installed by the Home Premium edition under any circumstances--but I can't confirm that either.
For the record, I dropped into Diskpart with a SHIFT F10 early in the Windows 7 install and did my partitioning there to avoid any possibility of ending up with the oddball.
But it isn't a big deal--that oddball partition takes up very little space.