<< Solved >> Get Prohibit sign on Catalina install screen

[Navigator16]

I have Mojave 10.14.6 running successfully and am trying to update to Catalina 10.15 from the Systems preferences pane.
During the install process in verbose mode I get the following “Prohibit” screen, unfortunately I get gibberish once the Prohibit screen appears.
Has anybody seen this before?

MB: ASUS ROG STRIX Z390-E GAMING
CPU: Core i7-8700K
GPU: Sapphire RX 580 Pulse 8GB

 

[P1LGRIM]

Has anybody seen this before?

Pretty much every day.

Use the forum Search tool to look for still waiting for root device.

 

[Navigator16]

OK thanks, at least a palce to start.

 

[Navigator16]

Made the following change to config.plist using Clover Configurator and Catalina installed correctly.
EFI > EFI > CLOVER > config.plist > Acpi > DSDT > Patches
From the List of Patches add “Change EC0 to EC”
Initially I added the patch “Change SAT0 to SATA” but Catalina would still fail during the install so once Catalina was installed and working I removed this entry.

Bluetooth is working fine as well as all other features with only 1 exception; audio is not working even after reinstalling the latest Lilu and AppleALC kexts.