I've done this a billion times... When trying to remove the bootcamp partition to return the hard drive to only 1 partition, it says, "Partition failed: This operation requires a newer version of Mac OS X for this disk." I use to be on Mountain Lion but downgraded to Snow Leopard so I still have my 10.8 recover partition. I tried booting off of that using that disk utility and it still wouldn't work, giving me a different error "Unable to unmount Bootcamp partition". Any help would be appreciated. Thanks.