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当前版本: Dan ,

文本:

Hold@mayer - Hold on here! You’ve thrown the baby out with the bath water!
Hold@mayer - Hold on here! You’ve thrown the baby out with the bath water!
 
Lets back up….
 
Apple applies EFI updates with EACH OS release! So the root issue here is the system does not have the REQUIRED firmware to work.
 
We hit this already with HFS+ to APFS with High Sierra. Where people would have updated their system and then they needed to replace the logic board and BAM! dead system as the drive was updated but the new logic board still had the older firmware.
 
So the only way to upgrade the logic board is to install a spare drive or use an external, then you have to go through the OS install process.
 
So you’ll need to do the same with a standard drive. Then lets see what happens then.

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open

原帖由: Dan ,

文本:

Hold on here! You’ve thrown the baby out with the bath water!

Lets back up….

Apple applies EFI updates with EACH OS release! So the root issue here is the system does not have the REQUIRED firmware to work.

We hit this already with HFS+ to APFS with High Sierra. Where people would have updated their system and then they needed to replace the logic board and BAM! dead system as the drive was updated but the new logic board still had the older firmware.

So the only way to upgrade the logic board is to install a spare drive or use an external, then you have to go through the OS install process.

So you’ll need to do the same with a standard drive. Then lets see what happens then.

状态:

open