I just bought a new Seagate 1TB Backup+ external hard drive. I immediately reformatted it from FAT32 to Mac OS Extended to erase all of the preinstalled crap. After erasing/reformatting the drive I'm not confident that everything is gone. Although it's now empty when I look at the drive in finder...Disk Utility says that 663.9 MB of space are used even though I have nothing on it. And second even after reformatting the disk description still says "Seagate Backup + BK Media" leading me to believe that not everything was actually removed. Is there some hidden read only partition? I just want a completely blank disk without any preinstalled crap. Thanks.