Macbook bios password reset

[mshane]

i have a macintosh macbook laptop i need to reset th bios password can anyone help me please thankyou . mshane

 

[vnf4ultra]

Macs don't have a bios, but I think you mean it has a firmware password. Resetting it requires changing the amount of physical memory (more or less, so if it has 2 sticks, remove one) and then booting it up while holding command(apple) + option + p + r. You need to hold down until you hear the "chong" twice. After this, the password is removed. The password normally disables resetting the p ram like that (and also booting off discs), but changing the memory amount allows it to be reset on next boot. It's odd, but that's how it is.

 

[DelJo63]

booting it up while holding command(apple) + option + p + r.

this is the EPROM ZIP sequence which will reset all options. It will not reset any passwords.
I've never used or seen a hardware PW on Macs, but that doesn't mean there is none

 

[LNCPapa]

Actually - VNF hit it on the head - except I believe you have to that process 3 times (not changing the amount of memory.) Also, if you can boot into the machine just fine you can use this application to get the open firmware password.

http://www.securemac.com/file-library/FWSucker.sit

 

[DelJo63]

yes, I recall the 3X issue too ...