Help needed on Mac Book pro boot issue.
2015-04-13 20:20:31 +0530: Starting repair tool:
2015-04-13 20:20:31 +0530: Checking prerequisites
2015-04-13 20:20:31 +0530: Checking the partition list
2015-04-13 20:20:31 +0530: Adjusting partition map to fit whole disk as required
2015-04-13 20:20:31 +0530: Checking for an EFI system partition
2015-04-13 20:20:31 +0530: Checking the EFI system partition’s size
2015-04-13 20:20:31 +0530: Setting the EFI system partition’s size
2015-04-13 20:20:31 +0530: Creating a new EFI system partition
2015-04-13 20:20:31 +0530: Problems were encountered during repair of the partition map
2015-04-13 20:20:31 +0530: Error: Couldn’t repair the partition map because a new EFI system partition couldn’t be created.2015-04-13 20:20:32 +0530:
2015-04-13 20:20:32 +0530: : Couldn’t repair the partition map because a new EFI system partition couldn’t be created.
2015-04-13 20:20:32 +0530:
On my macbook pro, was running on Yosemite and suddenly on starting the system I see "prohibited" sign. After trying a lot of combination of keys, I added external SSD and booted but it came up with Lion version.
MacBook Air, OS X Yosemite (10.10.2)