Entire file system goes read-only

[Richard Pieri]

The /etc/fstab and syslog.  fstab to make sure that the filesystem remounts as read-only on disk errors, and syslog to determine the nature of the error that caused the read-only remount.  Could be a bad sector.  Could be a failing controller.  Could be a faulty cable somewhere.  Could be any number of other things.

--Rich P.