3 long tones, 3 short tones, 3 long tones: Indicates EFI ROM corruption is detected and the computer is in EFI ROM recovery mode. > About Mac startup tones
Çeviri:
3 uzun ton, 3 kısa ton, 3 uzun ton: EFI ROM bozulmuş ve tespit edilmiş ve bilgisayar EFI ROM kurtarma modunda. About Mac startup...