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26.2 build 25C5048a tutto ok su amd

Tahoe 26.2 Beta 3

you will gain a bit in performance and also a better thermal design

organize for class tab and see display controller from your file i can see only 4090 gpu are you full fill all your nvme slot? i do not remember if Proart disable some pci slot if it is fullfilled have a look to your manual

Tahoe 26.2 Beta 3 (25C5048a) Full Installer https://swcdn.apple.com/content/downloads/56/46/089-47048-A_C8AE83Z2PU/we67cuq14ot4eb8xju7bkmmhd2zbkrhfvf/InstallAssistant.pkg

Risolto Grazie al grande maestro @Anto65 tutto funzionante al 100/% Grazie di cuore

👍 finchè tiene....credo che dovrò cambiare la cpu...o forse no...booo vedremo 🫢 👍

macOS Sonoma 14.8.3 (23J216)

i think your CPU lacks of some PCIE lanes... and this is a problem usually motherboard loose a nvme slot in your case seems differemnt

A volte ritornano 😁 tutto ok ? Sicuro che non manca qualche altra distro da installare ? Volendo usare le Entries personalizzate , con tutte queste distro direi ch e' quasi impossibile , anche perche' i file di boot ( come osa fare Linux ) chissa' dove li ha sparsi , a meno che non si disabilitano prima gli altri dischi non interessati Puoi abilitare " HideAuxiliary " in Misc > Boot per nascondere le versioni dei vari Kernel Prova a mettere questi 2 file Archivio.zip ( devi abilitare la visualizzazione dei file nascosti , se non li vedi ) nella cartella BOOT di OC e nelle altre EFI ( Linux - Windows ) sempre nella cartella Boot In Misc -> Security > ScanPolicy prova mettere 19496707 attualmente hai escluso lo scan per le partizioni NTFS

do not update for now. it needs new ACPI patches if we are lucky 😉

Is the resize bar enabled in the BIOS? Also run a CMOS to force detection and reset the NVRAM on the Mac, reboot from Mac and see what the card says under Information/Graphics and Monitor. Basically, it should see it. I get an error without WhateverGreen.kext. however it is the 4090 that predominates the slots, you have to try to temporarily remove it and try only the 6600 in pcie 1, once the mac is started insert it in the device properties of Opencore and put the boot arg nv_disable, put them back as they are now and try to start

@khileare you sure that rx6600 is full working? have you tried it with other os?

Put the 4090 in the PCIe x16_1 slot Place the second GPU in the PCIe x16_3 x4 slot, but I doubt you'll have room at the bottom to insert it. sorry my english

If you're using NVMe in slot 2 or 3, the second PCIe slot will have assigned lanes and the 6600 won't be detected. Try leaving M2_2 and M2_3 free.

Mi spiace ma per la milionesima volta credo stia perdendo tempo Dovresti specificare le caratteristiche Cpu , etc. Temo che sia un Intel core ultra , che non e' supportato ( per lo piu' l integrata ) massimo fino alla 10a gen. Dovresti emularlo come un Comet Lake e avere una DGPU ( RX ) supportata ( Desktop ) su laptop impossibile se non con -igfxvesa , senza accellerazione grafica ... a mio parere inutilizzabile

let see if it instal then we have to see if your gpu is accelerated and audio part 🙂 happy for you also for me because i thought i lost my touch (in hackintosh ) 🙂

So using the 10g now and it’s working installing now

in key management have you cleared secure boot keys? but it should be done because you see boot menu i would try to disable resize bar option and then also 4g in two different tries...but...now i am out of good ideas

@khilecant you try a traditional monitor? very curious and weird we have this problem

Che dire..... ancora grazie per le dritte

it seems a reference one ( i didnt know AMD did ones) i could try a desperate try but only to see if you can do a step forward with your tv screen and your cables try to set CSM on in your bios and see (if you do not damage other installation on your system)

I know i am asking so much 🙂 could you put Rx 6600 in first slot? are you sure you are trying from my latest EFI? it seems you loose hdmi connection or there is always a signal also with black screen?

is it watercooled or you can remove easily it? because it is weird if your RX is working well in other os can you connect only a monitor to RX 6600 and try to boot to your USB as i see in your video? then will think to full installer problem 🙂 I have a doubt if it is a problem with installed 4090

bios settings are well done for OSX? usually is possible to load default settings, disabling secure boot keys and fast boot, also to set CSM off and UEFI on, 4G on should be enough for many setups

then with my efi you should see a "dos" verbose scrolling lines Boot menu i see there is from gtx 4090? We should see it on RX 6600 usb pen seems to be formatted well

it could be normal if you use 4090 try to connect your monitor(s) to rx6600 you should also prvide a full installer and not a recovery installer because in tahoe your ethernet card could not work and a recovery installers needs a working one ethernet

... grazie dany per rispetto anche di chi ha scritto quei post / guide , anche se al giorno d oggi possono sembrare obsolete e' giusto che rimangono li , come hai anticipato c e' tanta roba fresca di giornata Una letta al regolamento ad esempio non farebbe male , se si vuole chiedere aiuto , iniziando ad esempio nel mettere in firma il proprio Hardware

Benvenuto. Ci sono post datati.....???? Si forse....ma ci sono anche molti freschi freschi di giornata.

Do you mean also no video input of your bios scanning? or do you see opencore bootloader? you must start from your USB pen or disk and you have to format it in a proper way for EFI

/Library/Developer/KDKs/ ... intendevo come ultimo il KDK non OCLP-MOD

This i have attached is an EFi for your system I don't know which OS you are trying to install and if you disable your on board wifi which is not compatible with OSX Other unknown part is where your 4090 is installed On OSX your motherboard needs a SSDT bridge if you use RX 6600 on you lower PCIE slot however if you are trying to boot Sequoia or Tahoe or lower you can try this: EFI.zip post a photo or a video where it hangs 🙂 By the way, in your latest EFI you missed to update AMD Kernel Patches to latest useful if you are trying Tahoe installer

macOS Sequoia 15.7.3 -24G416-👍

Not useful for AMD using OC simplify your EFI misses completely MMIO whitelist part i would suggest to use my initial EFI in this post (updating kext, amd kernel patches and opencore) and post again your result and EFI

Prova ad usare CleanNvram.efi.zip mettilo nella cartella Tool e va dichiarato nel plist , al boot riavvia ancora una volta dopo averci cliccato

macOS Sequoia 15.7.3 (24G416)

macOS Sonoma 14.8.3 - 23J213- 👍

macOS Sonoma 14.8.3 (23J213)

Si windows 11 e non conosco OpCore-Simplify ora provo subito..... Grazie...

Its working!!!! Can boot all the way into recovery but then complains there is no internet connection but i can at least get there now thank you so much

Non hai imparato ancora il Cinese ? 😅 Devi essere collegato con la lan " Errore: mancata corrispondenza MD5 KDK: verifica del toolkit di debug del kernel non riuscita. Riprova. Se il problema persiste, assicurati di scaricare tramite una connessione di rete stabile (ad esempio, Ethernet). OK. Controllo della validità del checksum in corso... " Hai l ultimo KDK installato ? KdkSupportPkg in caso rimuovi quello precedente