Im trying to free up space on my hard drive, but for some reason, it does not work to delete free disc space anymore. No matter what speed I chose. Disc utility starts to delete free space, but when it comes to create a temporary file, it always fails. Verifying and repairing discs also does not work. I have upgraded my Macbook from 2008 since Leopard, and I feel something is wrong somewhere. That my OSX is secretly going insane. But it wont tell me about it.