enter bios on macbook air 2017/a1466
hi I used many key like command+o+f and other key to enter bios macbook air 2017 but could not entrance on it please guide me
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Command + O + F sounds suspiciously like a startup key combination to get into the Open Firmware environment. Apple used Open Firmware on PowerPC-based Macs – but a 2017 MacBook Air is an Intel-based Mac, and thus to the best of my knowledge, its equivalent of BIOS is Intel's EFI (Extensible Firmware Interface). Command + O + F wouldn't have any meaning on that system.
I don't know if there's a way to get directly into EFI, but on Intel Macs, there are other key combinations for getting into the Startup Manager, Safe Mode, macOS Recovery, etc. See: