Did you have to format or did you just use resizing options? Obvious solution if you formatted would be to start over. If you're not trying to save data that would be my suggestion. You can also try partition magic and see if it'll allow you to set that stuff backwards. I doubt you will be able to achieve this as programs don't recognize wbfs. On that again if you're not concerned with data loss, create a logical drive of 325gb at the end of the drive. You know that slider you use to adjust space before or after? Make sure space is allocated after leaving 150gb free at beginning of the drive. This will be your primary drive wbfs. Create such a drive in the allotted space. Here is a quote from partition magic in case you'd like to try it before repartitioning. "For a job of this sort, a utility like Partition Magic is indispensable: it can convert a primary partition into a logical volume. Otherwise you will basically have to wipe the second disk clean and start over." It isn't freeware and I don't recall if there's a trial or not, sorry for that.. Best of luck..