1 Reply Latest reply: Dec 27, 2012 10:14 PM by John Galt
amresam Level 1 (0 points)

When i tring to start my mac, the operating system cannot be opened, even if i restarting  or shuting it down and start it again.

Just the background only appeared.

How can i repair or fix the OS

The 2nd question, i have to take a backup in time machine by a storage capacity equal or more than the data size in my mac, or can i use a storage less than the current data by selecting specified data plus the os to take a backup

Mac Pro, OS X Mountain Lion (10.8.2), Os not opened