I don't understand, when I try to install windows 7 I get this...
in disk utility it says that Macintosh HD is a Mac OS Extended (Journaled) volume
Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again.
in disk utility it says that Macintosh HD is a Mac OS Extended (Journaled) volume