I recently had a trouble when I try to bootcamp Windows 8 into Mac OSx, I tried to upgrade my Windows 7 bootcamp immediately to Windows 8 without thinking that the latest Bootcamp drivers does not support yet Windows 8 drivers, so there it is. I cannot boot back to Mac OS X. So I tried to downgrade the OS with no success (Windows 7 installer does not work), and anything else.
Until I decided to reformat the Bootcamp drive (still under Windows 8 Bootcamp) and taught that I can boot into the Windows 7 OS installer but instead produced an error in the installation, so I was there stuck and left with the message ” An operating system wasn’t found. try disconnecting any drivers that don’t contain an operating system” under the black screen prompt. I cannot boot any disk, usb, cd drive.
So the only solution is to use the Mac OS X installation CD if you have one. So here the instructions
1.Insert Mac OS installation CD during boot – note: Hold on C on keyboard to boot into disk, until you can see an Apple Logo loading which is a good sign noh :). The choose the language (don’t worry , we are not gonna reinstall the Mac OS X)
That is it, you can now recreate the bootcamp if you reformatted it accidentally. Please comment below if you have any questions.
Tags: An operating system wasn’t found. try disconnecting any drivers that don’t contain an operating system