Previous 1 2 Next 22 Replies Latest reply: Mar 13, 2016 7:21 PM by Htoonlin
Richard Dickins Level 1 Level 1

My Mac formatted partition on my Macbook is corrupt so I am trying to boot from a disk in order to try and either repair the partition or to reinstall Mac OSX.

 

When I try and hold either alt or C nothing happens, it just attempts to boot as per usual with no visible change in the boot.

 

For information I have used the shortcuts before and they worked,

I am running OSX Lion,

I have a late 2011 MBP,

I am using the inbuilt keyboard (I have tried other keyboards),

If I hold alt it should give me the option to choose Lion Recovery, Bootcamp or Lion.

 

 

Thanks if anyone can help!


MacBook Pro, Mac OS X (10.7)
Reply by Shootist007 on Sep 3, 2012 4:40 AM Helpful
Sounds like one of serveral things.1) The keybaord is bad2) You need to reset the SMC and PRAM. But if the keyboard is bad you won't be able to but give it a try anyway.3) The drive is so corrupted that the Option key boot can't find any disk to list as a boot option. Never tried using the option key without some type of boot system/drive connected to my Mac. With the Late 2011models there is the Internet Recovery System.Wire the computer to your internet router, Ethernet Cable going from computer to router.At startup hold down the Command+Option/Alt+r keys until you see a spinning globe in the center of the screen. That is the Internet Recovery system. From there you can check the drive with Disk Utility and Reinstall Mac OS X.
Reply by Shootist007 on Sep 3, 2012 5:41 AM Helpful
What do you mean when you boot to Windows? How are you getting to Windows without using the Option key Boot. Was it selected from Startup disk in OS X? Or is it just booting to Windows as there is not bootable version of OS X on the drive? Whether or not the keyboard works once windows loads doesn't mean there isn't some type of problem with it when the system frist starts up. If there wasn't a problem with it, or a Logic board program, then the Option key boot, the command+r key boot and the Reset key commands would work. From what you've posted None of these keyboard commands work at all. HOLD DOWN Command+Option+r then press the power button. Continue to hold down those 3 key until you see a Spinning Globe in the center of the screen. If that does not work to boot the computer from the Internet recovery system (that is if your Mac was made in 2011 or later) then You Have a Keyboard or Logic Board problem. There is NO doubt about it.

All replies

Previous 1 2 Next