I have installed Yosemite on a partition on my iMac and the folders in my home folder such as music, movies, pictures etc from my main Mavericks partition can't be opened. It says that I don't have permission to view the folder and the icon itself has a little no entry sign on the bottom right hand corner. I know that these files and folder can be viewed across partitions as it works absolutely fine on my brother iMac who is doing the same thing I am. Mavericks main system with Yosemite partition. I can't work out why it won't let me view these folders. Any ideas/solutions would be greatly appreciated. Thanks!