Solve : Read-only file system?

1.	Solve : Read-only file system?
Answer» I want to remove a FILE from MAC. I am in Single user mode. (the UNIX level) The command I am using is "rm filename.log" it asked if I want to override the permissions for the file, I ANSWER "y" it then displays the file name followed by "Read-only file SYSTEM" and the file remains. What command can I use to DELETE this file?Ok I GOT it log in as "root" and you can trash what ever you want

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