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@hinkin this attaced is your usbmap kext adapted for tahoe you can backup yours and see if your system boots the same...then you have to update your EFI for tahoe (patches and other things i said in previous my message)

@unclesam your previous bios needed of ACPI patches? if so probably they are changed with you bios You should use a debug version of your bootloader enabling SysReport Then post DSDT.aml to CorpGhost (aka CorpNewt) on AMD OSX Discord Server

https://github.com/laobamac/SimpleRTK5

No Norm :) I reverted 1804/1805/2001beta to 1715 in the usual way Usb with 1715 bios propely inserted in falshback back usb Bios renamed as ASUS teaches us..and pusshing back flashback button i have 4 Nvme and four sata disks greater Bioses than 1715 are weird with OSX (i cant say in other OS...

@Norm Bartley this contains patches for 1804/1805 bios They worked also with latest 2001 betaq bios for X870E Hero motherboard, i had the same problems with sata disks, so i stay again with 1715

Using flashback button and an usb stick with 1715 bios inserted in with proper name

this config has WEG disabled and scanpolicy set for your disk configuration (i am using my default EFI and i forgot to put scanpolicy for your system Also you can try to disable -v in bootarg option And maybe, we miss also a proper USB map you should try to do in windows with corpnewt tool

@Koffein71 sorry, put to 0 Scanpolicy in config i posted try also to disable Whatevergreen kext and see if it hangs in the same place

ASM USB4 of my Hero is not compatible , i use only to chatge my iphone mobile

ok a step forward i cant see initial debug do you see some ACPI lines errors?

@Koffein71 disable wifi and ethernet from your Bios Always in Bios Disable CSM, enable UEFI, Enable 4G and resizebar option Disable fast Boot and try this different EFI (language is in italian but if you see some debug lines in verbose different of "EXIT and son on" we wil try to adjust if...

I bypassed for now MMIO things using DisableVariableWrite quirk togheter classic DevirtualizeMMIO quirk do you do a step forward or do you stop always in the same place? Good source are here and also on macOS86.it no others places :) :)

This is enough for start Latest two you found later are or the same things oe worst :) try my config with your EFi and see if you do a step forward

We haven't even reached the point where we see ACPi errors indicating the need to have the DSDT patched! :)

@Koffein71 OC Simplify does not work well on AMD system Your EFI is a mesS! :) AMD platform as yours needs to do a proper MMIO whitelist or to set a proper booter quirks Your EFI uses pikera boot arg without using WhateverGreen.kext Also you use SSDT plug and SSDT CPUR (only one of this is to...

not following dortania guide so i didnt know this :) Never had this problem. But it is good to know :)

Have you tried to enable fix pat by shanee instead the one (safer you use) Algrey ones i mean you should also improve with Shaneee fix pat patch GPU benchmark in many case

@realmranshuman USBKext is good also for tahoe I do not understand what some kexts do in your system: ForgedInvariant NullEthernet and some bootarg: gfxrst=1 ppfeaturemask=0xffffffff i never used them and i do not know if usefull in some tasks Big problem of your rig is that Realtek ethernet...

@realmranshuman reading on discord, you disabled DisableVariableWrite and system boots fine always, and this is a discover for AM5 system if also other stuff is not changed in bootloader runtime we use DevirtualizeMMIO is mandatory also for you if i have understood well Now you could try to...

it is verified only if you disable DisableVariableWrite quirk in booter section Otherwise, if system doesnt boot without this quirk , it means you need to use a proper MMIO whitelist if your system has problems (reboot/shutdown if not solved in bios setting) I added that quirk in ones of many...