http://luckyviplav.blogspot.com/2011/06/windows-7-on-mac-os-x-through-virtual.html I found that page, but I don't seem to be having any success. Since I haven't used the Terminal window, I seem to be missing something, about how the operation is performed. Is there any chance one of you guys could take a look and show me what I'm doing wrong? I actually want to temporarily unmount the Bootcamp drive, as I will want to restart into Bootcamp, as well as in VirtualBox - so I have jumped to the end of the first step. I have ejected the BOOTCAMP drive and then, in Terminal, typed: $sudo chmod 777 /dev/disk0s3 unfortunately i get the message: chmod: Unable to change file mode on /dev/disk0s3: Operation not permitted So, I need to change permissions? EDIT: So.......I typed in "sudo chmod 777 /dev/disk0s3", (- the $), and got a warning message and asked to type in password, but the keyboard wont accept my input? I can ctrl-c back out though. I have also ran repair disk permissions, but it hasn't done anything that I can see.