fsck returns error volume / is mounted with write access.
I am attempting to do an fsck of the iMac I bought in 2010. It now has El Captian update on it. At the command prompt I attempt to run the fsck -fy command but get the following error "volume / is mounted with write access. Re-run with (-l) to freeze volume". I tried running the command with "fsck -fy -l 1" with the same result. Not sure what the problem is or how to circumvent the error in order to run fsck. Ideas?
iMac, OS X Mavericks (10.9.1)