How can I reset NVRAM in OpenCore?

Safari will not open any website and suggests I zap the pram. How in OpenCore? It does not work using the usual keys while starting.

I have two 1TB solid state on a Mac Pro early 2009 upgraded to late 2009. OS is Mojave 10.14.6.

Also Safari occasionally shows an update to 12.1.6 but there seems to be no way to install it.

Will a Mojave re-install make Safari work?

Mac Pro, macOS 10.14

Posted on Sep 30, 2023 6:02 AM

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3 replies

Sep 30, 2023 9:39 AM in response to ZHMMMY

'Safari will not open any web site' is not likely related to OpenCore boot loader or to PRAM settings.


But you can reset the PRAM on a Mac Pro 4,1 or Mac Pro with 5,1 firmware by holding the Four keys at startup (when none of OpenCore or any part of MacOS are loaded, and only the ROM resident software is active:


Using a Wired keyboard connected directly to a port on the chassis (not on a display or other Hub) Hold these four keys at startup (this takes a while, so be sure you can endure):

Command-Option-P-R

...and wait for FOUR sets of chimes


failure to chime a second or third time suggests your PRAM backup battery is getting tired.




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How can I reset NVRAM in OpenCore?

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