crwdns2934241:0crwdne2934241:0 mayer

crwdns2934249:0crwdne2934249:0:

Hook it up however you installed the system in the first place (external disk drive, hard drive or target mode.  Run Disk Utilities and see if you can repair the drive.  This could be the hard drive cable, connection, corrupted system, or failing drive.

crwdns2915684:0crwdne2915684:0:

open