I installed Windows 10 using boot camp on a separate drive. Now I can't boot in my regular Mac OS now, even when I use the option key at startup. It's booting straight into Windows 10. It's also not resetting PRam or SMC.
Mac Pro, macOS 10.13
If neither of these work perhaps the Internal Drive chose this time to die???
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/HT1379
In fact, do 3 in a row, takes a bit of time.
Intel-based Macs: Resetting the System Management Controller (SMC)...
Does it boot to the Restore Partition with CMD+r keys?
No it doesn’t
I was able to reset this time using the original Mac keyboard. Thanks so much for your help.
OK, does MacOS now boot?
Super, great to hear! :)
I installed Windows 10 using boot camp on a separate drive. Now I can't boot in my regular Mac OS now, even when I use the option key at startup. It's booting straight into Windows 10. It's also not resetting PRam or SMC.
