I recently upgraded the drive in a dell laptop. I put the drive in an external case and disk management showed 6 partitions on the drive, I deleted 3 of them and now I show 2 unallocated spaces that I can't seem to make a part of the primary partition. The drive shows 697mb and I thought it was a 750mb drive {I would attribute the missing mb to formatting etc} What are the two 500mb spaces shown in disk management?