My mbp seems to be in serious trouble. It does not boot, and I am trying to find what is going on. Meanwhile, in case I give it to an apple service, I need to delete some of my own files.\ The one and only way to have some access to my files, is by entering th unix mode, pressing command-s during startup. I do not know unix. I google it and try to do it, but I fail. So, I go to the directory I want, typing 'cd'. Then I type rm filename The system display: override rw-r--r-- 502/admin for filename? I press y And then the system display: rm: filename: read-only file system The file cannot be deleted. It is a file that I created. It is my file, not a 'system' file. I get freak when I am thinking I should deal with 'permissions' or 'ownership', but please tell me an easy way to be able to delete personal files that I created.