How to break Macbook "Bios" password
The Macbook have silimar bios password like PC, it called Open firmware (EFI on Intel based Mac), if this password has been set, you can not use all the boot keys any more, like "C","T","Option" etc.
How to break:
Remove or add memory, make the memory size changed, turn on the mac and immediately reset PRAM by holding the Command-Option-P-R key bombination. Press the key until you've heard two successive startup sound. then restart, the password will be disabled.
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