mac os x – error code sound

Original IBM POST error codes
1 short beep – Normal POST – system is OK
2 short beeps – POST error – error code shown on screen
No beep – Power supply or system board problem
Continuous beep – Power supply, system board, or keyboard problem
Repeating short beeps – Power supply or system board problem or keyboard
1 long, 1 short beep – System board problem
1 long, 2 short beeps – Display adapter problem (MDA, CGA)
1 long, 3 short beeps – Enhanced Graphics Adapter (EGA)
3 long beeps – 3270 keyboard card

copied from http://diskusiweb.com/post.php?action=reply&fid=76&tid=22829&repquote=133416

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