So, I'm trying to use Bootcamp to set up a Windows partition. However, I keep getting an error message telling me that some of my data cannot be partitioned and that I need to go to the disk utility and set up a single Mac OS X Journal (Extended). However, the disk utility tells me that is the partition that it is in already and I have never changed it. Does anyone know how this can be fixed/what is causing it? Thank you in advance.