Early 2009 MP w/Mojave goes to black screen when trying to get to boot options

By Guest phdillard
August 4, 2022 in Archives

https://extremetechsupport.com/topic/1209575-early-2009-mp-wmojave-goes-to-black-screen-when-trying-to-get-to-boot-options/

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Guest phdillard

Posted August 4, 2022

I'm trying to get my recently-updated-to-Mojave 2009 MP to go to the boot options screen so I can use the usb boot I made for Catalina per dosdude1's instructions, but holding Alt just results in a black screen that never changes and I have to power cycle the computer to get it to load to the normal desktop. Here's what I've recently done:

updated firmware from 4,1 to 5,1

updated from El Capitan to Sierra then to High Sierra and I did install the HS firmware

then I upgraded the stock 2.66...

Source: MacRumors