But that's not an io error message. The kernel is simply stating that it has equated the BSD root (i.e., "/") with the disk volume formerly known only as "disk0s2".

(Edit: this message is a reply to joemikeb's, not virtual1's.)

Last edited by ganbustein; 09/06/12 10:21 PM. Reason: Clarify what "But ..." refers to.