Reply: RPi turning off when connecting MBA Easy Clip?

Have you tried ALT booting a USB install media?

That should get you up and running

reverendalc wrote: OWC makes an external enclosure called envoy. it's definitely not cheap, but most mac related stuff isn't.
i would ask around and try to find a friend with a comparable macbook pro/air, and simply use theirs to install OS X on your ssd.

try booting with:
CMD/OPT/P/R to reset nvram
ALT to specify alternative boot device
CMD/R to load recovery console
T to boot in target disk mode

if your mac is iCloud locked, then all of these boot options should result in the padlock password screen. if you're not ever seeing that screen, it's simply progressing to the [?] without performing any action, i would try an external keyboard to make sure that you're actually sending those commands. i had a macbook with a bad ALT button once.

OWC makes an external enclosure called envoy. it's definitely not cheap, but most mac related stuff isn't.
i would ask around and try to find a friend with a comparable macbook pro/air, and simply use theirs to install OS X on your ssd.

try booting with:
CMD/OPT/P/R to reset nvram
ALT to specify alternative boot device
CMD/R to load recovery console
T to boot in target disk mode

if your mac is iCloud locked, then all of these boot options should result in the padlock password screen. if you're not ever seeing that screen, it's simply progressing to the [?] without performing any action, i would try an external keyboard to make sure that you're actually sending those commands. i had a macbook with a bad ALT button once.

reverendalc wrote: that's curious. the [?] screen happens when somebody remote erases via iCloud, but you should certainly expect the EFI lock screen when attempting to boot with ALT.

can you clear the NVRAM with CMD/OPT/P/R, or boot single user or safe mode?

if those don't work, but it doesn't greet you with the padlock, next i would connect a USB keyboard to be sure that you're actually sending ALT/OPT when pressing the keys.

do you have another mac or a usb enclosure you can use to install OS X on that ssd, and then try to boot the mac from it?

that's curious. the [?] screen happens when somebody remote erases via iCloud, but you should certainly expect the EFI lock screen when attempting to boot with ALT.

can you clear the NVRAM with CMD/OPT/P/R, or boot single user or safe mode?

if those don't work, but it doesn't greet you with the padlock, next i would connect a USB keyboard to be sure that you're actually sending ALT/OPT when pressing the keys.

do you have another mac or a usb enclosure you can use to install OS X on that ssd, and then try to boot the mac from it?

reverendalc wrote: you shouldn't even be able to load internet recovery if it's iCloud locked, it should say "this computer has been disabled" or whatever as soon as the console loads.

is your macbook iCloud locked, or are you just fighting an EFI password?