Hello,
My macAir mid 2012 can only boot into Windows 10. It cannot recognize OPT to launch start-up disk menu selection.
It cannot recognize OPT-CMD-P-R to reset PRAM, thus continuously boot into Windows 10.
I tried the following, attempting to reset PRAM: --- ALL FAIL:ED ---
1. OPT-CMD-P-R with built-in keyboard
2. OPT-CMD-P-R with external USB keyboard
3. OPT to launch start-up disk selection, trying to get back into macOS then reset everything from there. Did not work
4. CMD-R to get into recovery mode
3. CMD-OPT-R, was able to launch internet recovery. Was able to download a macOS but the macOS version is not compatible with mid 2012 model. Apple support forum suggested I reset PRAM which is what I am trying now...
Would appreciate any pointer how to solve this problem: reset PRAM
Thank you
Minh
My macAir mid 2012 can only boot into Windows 10. It cannot recognize OPT to launch start-up disk menu selection.
It cannot recognize OPT-CMD-P-R to reset PRAM, thus continuously boot into Windows 10.
I tried the following, attempting to reset PRAM: --- ALL FAIL:ED ---
1. OPT-CMD-P-R with built-in keyboard
2. OPT-CMD-P-R with external USB keyboard
3. OPT to launch start-up disk selection, trying to get back into macOS then reset everything from there. Did not work
4. CMD-R to get into recovery mode
3. CMD-OPT-R, was able to launch internet recovery. Was able to download a macOS but the macOS version is not compatible with mid 2012 model. Apple support forum suggested I reset PRAM which is what I am trying now...
Would appreciate any pointer how to solve this problem: reset PRAM
Thank you
Minh