Hi, I have a 2010 Macbook Pro, 13" with a 2.4GHz Core 2 Duo. I have OS X Mavericks, along with a copy of Windows 8 on my bootcamp partition. I have a recurring problem, which happened three times already. It started in July. So I turned the computer on (after it beeing turned off normally), and I was just blocked on the booting screen, i.e the gray screen with the apple (but no loading wheel). So I had no other choice but to press the on/off button for several seconds, until the computer turned off. Then I tried to turn it on again, and it started in safe boot mode. When the loading bar was full, it would turn off on its own. I tried to use the Disk repair utility in the recovery partition, but it displayed a message like "Disk cannot be repaired, reinstall Mac OS" Fortunately, I have my Windows partition, which I could still boot on. So I was able to backup almost all the data I needed. I said almost, because with some files, the copy-paste process would just fail, telling me that the files were corrupted. I then reinstalled Mavericks from scratch, and it worked perfectly... for three weeks. then I had the exact same problem. Same problem, same solution, I again lost a lot of time backing up and reinstalling, again losing some data on the road. And back to the present, today, guess what, same problem ! So I am getting a bit tired of that, and given that college has started, I really don't have time to waste every three weeks for fixing that. I would be really glad and thankful if you could help me with that issue. Thank you, Gaetan
Sounds as if you have something that is either a hard drive failing like a old Hollywood death or a program/service that is not compatible with Mavericks. Use the freeware application EtreCheck because it will show in red the incompatible programs/services and the path to manually delete those incompatible services/programs. Then reboot.