I installed mountain Lion soon after it was release. Ever since i do not have any problems. All of sudden last night, it is not booting. When i pushed to power button, i hear the volume, apple logo and then shutdowns( all happening in less than 1 min.). Its the same story all the times. I tried couple of options. 1. Tried online recovery, Commad + R , took me to apple server boot, from here i could not, repair disk 2. Tried to reinstall os-x, got the error disk is locked 3. Resetting PRAM and NVRAM -Command-Option-P-R keys Nothing worked out. Can you please suggest me if it is possible to get my mac with data? I don't have any Time machine backups to recover from. Thanks.