I already have Windoze 7 loaded and running via Bootcamp... But I wanna do a complete defrag of the drive/partition by booting from a different source (i.e.: USB flash or a USB external).. How can I do it? I have access to VMware Fusion and Parallels. Can it be done through those apps? I'm a 2011 27" iMac running El Cap.. My bootcamp drive is NOT partitioned. It's a whole separate 1TB drive. Also while I'm here, is there a way to delete/remove the System Reserved partition that Bootcamp created?? Thanks!!!