Hi,
that's a Microsoft thing.
When you create a new partition, windows create a MSR (Microsoft Reserved Partition).
In your case it's a 32 MB Partition
http://en.wikipedia.org/wiki/Microsoft_Reserved_Partition
DISKPART> list partition
Partition ### Type Size Offset
------------- ---------------- ------- -------
Partition 1 Reserved 32 MB 17 KB
Partition 2 Primary 68 MB 33 MB