Boot up the Mad in OS X by holding down the option key and selecting the Mac Hard Drive.
Once booted, go to System preferences > Startup Disk and select the Mac HD that has OS X on it.
Close the window and see it that makes any difference for you at the next reboot
Hi, I'm having trouble starting Mac OS X after removing the Windows partition of Boot Camp.
I get a black screen that reads,
" no bootable device -- insert boot disk and press "
I can load Mac OS X if I press the Option key during startup, and select the Mac hard drive.
How do I load up the Mac OS X system without having to do it manually? I'm a brand new newbie with Macs. Thanks a lot !