This is really annoying. I have a brand new Seagate 3TB 7200 RPM hard drive that I am trying to format/partition in Disk Utility. Every time I change any settings or erase the drive, it changes it to a Logical Volume Group and subsequently changes the partition to a Logical Partition. Then I have to use Disk Utility in terminal and manually erase it.
This is really weird because I have two of these exact same drives and I zeroed out and partitioned the first one a couple of months ago without any issue whatsoever. I am not doing anything different than I always do when setting up my HDs.
I'm running OSX 10.8.4 on a 2009 Mac Pro.
Edit: I am not trying to make a Fusion Drive. The drive will be partitioned as GUID Partition Table with 1 partition and Mac OS Extended (Journaled) and then when I erase the drive or change the number of partitions, or the partition map—any of these adjustments makes it instantly a Logical Volume Group. Again, to clarify, this is ONE drive, I shouldn't be able to make it a fusion.