2010/4/28, Benjamin Cama <[email protected]>: > > I don't want to deter you from changing the disk and such, by if you > don't even get to an Open Firmware prompt, you won't be able to boot > from anything connected to your Mac. The OF is what will bootstrap the > bootloader stored on some media ; if it doesn't come up, you won't be > able to boot from anything. Something important must be broken ... > Actually I didn't mean to boot from the hard disk, but just read the Firmware image file and write it to the OF flash. I assume that the internal ROM in the PMU chip contains code for this. And that this code is activated instead of OF when the power button is held.
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