[pre-release] macOS Tahoe

[pico joe]

I tried to compare the Geekbench scores, and yes, the scores dropped on Tahoe3.

 

Spoiler

 

 

Edited July 16, 2025 by pico joe

[kaoskinkae]

We continue studying the beta 3 of Tahoe on my two computers. On the OLD:

I get to sleep when using the SSDT SSDT-XHCXPRW.aml. By removing the USB ports to be woken up. I can return from sleep by pressing the POWER key.

 

On the NEW computer: I can't get to sleep, it goes into sleep and after a few seconds it wakes up again. I have passed a command from terminal and that is what it says. I don't know if it is related to the Bluetooth keyboard and mouse devices on the Mac.

 

SOLUTION 

 

Edited July 17, 2025 by kaoskinkae

[Montblanc]

2 hours ago, pico joe said:

I tried to compare the Geekbench scores, and yes, the scores dropped on Tahoe3.

 

  Reveal hidden contents

 

 

 

Not seeing much difference here between Sequoia and Tahoe b3 with my RX6600 XT.

I have changed from iMacPro1,1 smbios to Mac Pro 7,1 though, so this might make a difference in results?

Spoiler

 

[deeveedee]

@Montblanc I am finding that GeekBench 6 Metal Benchmarks for my RX 560x are ~20% lower with SMBIOS MacPro7,1 than they are with SMBIOS MacMini8,1 for my hack here.  When testing with SMBIOS MacMini8,1, I am not seeing any significant GB6 Metal benchmark differences between macOS Sequoia and Tahoe Beta 3.  However, I did see a temporary drop in GB6 Metal Benchmarks immediately after upgrading to Tahoe Beta 3.  This temporary drop resolved itself and GB6 Metal benchmarks returned to "normal" after a few reboots of Tahoe Beta 3.

 

In summary:

• RX 560x GB6 Metal Benchmarks in Tahoe Beta 3 are ~20% lower with SMBIOS MacPro7,1 than they are with SMBIOS MacMini8,1
• No significant RX 560x GB6 Metal Benchmark differences between Tahoe Beta 3 and Sequoia when tested with SMBIOS MacMini8,1 (I haven't tested macOS earlier than Tahoe Beta 3 with SMBIOS MacPro7,1)

 

See other test results here.

 

EDIT: My system specs are as follows:

• WhateverGreen.kext 1.7.0 / Lilu.kext 1.7.1
• Open Core 1.0.5 Release
• dGPU: RX 560x 4GB  Baffin (Polaris 21)

Edited July 16, 2025 by deeveedee

[webipsum]

On 7/14/2025 at 5:32 PM, miliuco said:

@Anto65  @webipsum

 

I did data migration in a Tahoe installed from scratch and it did work. Source disk was Tahoe too. 

Young @miliuco
When did you use Migration Assistant?
1) Right at the beginning (I believe before creating an account, etc.) or
2) After the installation was complete, by running the Migration Assistant application?
Thank you.

[miliuco]

@webipsum

As in number 1. 

[vrondena]

Greetings to everyone, we are at beta 3 of Tahoe but I don't find installations on notebooks. I have tried several EFI but none proceeds with installation (on external HD) if someone can give support is welcome. maybe for my Dell xps 9360

[dafob]

On 7/14/2025 at 4:21 AM, taqieallah said:

hello ive got a new optiplex 3080 with intel i5 10500 without dgpu .. ive working on sequoia good but after updating to tahoe ive got blackscreen after boot .. tried to connect via dp and the same issue .. any advice?

Could you please share your EFI for the OptiPlex 3080? 

[MakAsrock]

On my Asrock-Z690-PG-Reptide, the DMAR table does not have entries that interfere with Hackintosh, and there is no need to drop it bat I can boot in Tahoe b3 with ethernet problem with Open Core 1.0.5 Release. The Ethernet RTL8125 which work on sequoia isn’t work on Tahoe b1/b2 and b3.

My Config:

 

 

config.plist

Edited July 16, 2025 by MakAsrock

[deeveedee]

@MakAsrock I'm not able to view your config.plist right now.  You may need this in your config.plist even if you didn't need it in Sequoia: 

 

Kernel > Quirks > DisableIoMapper = true.

[MakAsrock]

50 minutes ago, deeveedee said:

@MakAsrock I'm not able to view your config.plist right now.  You may need this in your config.plist even if you didn't need it in Sequoia: 

 

Kernel > Quirks > DisableIoMapper = true.

Thanks for the tip. Indeed, the difference in the OC and Clover configs (in which the network card works), is in this option. There is a problem with virtualization in Tahoe, It works fine in Sequoia, but the situation has changed in Tahoe. In order for my network realtek to work in Tahoe, I had to turn off virtualization.

Edited July 17, 2025 by MakAsrock

[deeveedee]

@MakAsrock I first learned about this from lorys89 here.  Mieze tried to address this with a change to IntelMausiEthernet.kext, but indicates here that the only solution may be to disable AppleVTD.

[innerd]

Hi, im stuck at login screen, i type my password and it never let my go to the desktop. I checked filevault and its disabled, any tips?

[deeveedee]

@innerd Give me a minute ...

 

EDIT: My crystal ball doesn't have an answer.  Please provide your EFI, last working version of macOS with your EFI, whether you upgraded to your current version from a previous version or performed a clean install, your graphics card...  Without details, you'll just get uneducated guesses.

Edited July 17, 2025 by deeveedee

[MacWill]

@deeveedee An alternative to your predictions.

Edited July 17, 2025 by MacWill

[MacWill]

Always stuck in this part of the boot process. Does anyone have any ideas? With the same configuration, I can get into the Sequoia.

config.plist

[Lucas_Udia]

17 minutes ago, MacWill said:

Sempre fico preso nessa parte do processo de inicialização. Alguém tem alguma ideia? Com a mesma configuração, consigo entrar no Sequoia.

config.plist 53,49 kB · 1 download

test this config friend, good luck!

config.plist

[kgp]

59 minutes ago, MacWill said:

Always stuck in this part of the boot process. Does anyone have any ideas? With the same configuration, I can get into the Sequoia.

config.plist 53.49 kB · 2 downloads

 

Just disable WhateverGreen.kext before this boot step. 😉

[MacWill]

@Lucas_Udiayes, my friend, your file helped me overcome another step. But when loading the graphics, it goes into a loop.

 

@KGP-iMacProthe green is disabled.

[pico joe]

9 hours ago, innerd said:

Hi, im stuck at login screen, i type my password and it never let my go to the desktop. I checked filevault and its disabled, any tips?

boot from recovery or other system macos to disabled filevault

[MacWill]

16 hours ago, Lucas_Udia said:

test this config friend, good luck!

config.plist 54.14 kB · 6 downloads

Black screen!

[Somankr]

Finally Bluetooth works on Tahoe. Previously Bluetooth only worked on the Sequoia. After I disabled all USB kexts, everything works fine in Tahoe and Sequoia with the same OC EFI.

 

 

 

Intel Core i7 12600KF, ASROCK RX 6600 XT, Asus Tuf Gaming B660M-Plus WiFi Motherboard

Edited July 18, 2025 by Somankr

[Lucas_Udia]

17 hours ago, MacWill said:

@Lucas_UdiaSim, meu amigo, seu arquivo me ajudou a superar mais um passo. Mas ao carregar os gráficos, ele entra em loop.

 

@KGP-iMacProo verde está desabilitado.

try switching from hdmi to another DP video output if you have one available!

[deeveedee]

In all Tahoe Beta versions, I was experiencing occasional MS Remote Desktop connection failures when using Acidanthera's IntelMausi.kext 1.0.8.  These issues have been completely resolved by switching to Mieze's IntelMausiEthernet.kext 2.5.5d0.  Note that with Tahoe, I need 'Kernel > Quirks > DisableIoMapper = true' in my Open Core config.plist for working Ethernet.

 

My hack 's Ethernet: Intel I219LM Gigabit Ethernet.

 

[MakAsrock]

20 hours ago, MacWill said:

Always stuck in this part of the boot process. Does anyone have any ideas? With the same configuration, I can get into the Sequoia.

config.plist 53.49 kB · 4 downloads

You need to follow these instructions exactly:

On 6/30/2025 at 2:31 PM, eSaF said:

A few post back, I bemoaned not being able to clean install Beta 2 and can only update off Beta 1 with the RX580 on line.

Ladies and Gentlemen I cracked the code as what was also done by others before me.

 

How to Clean Install Tahoe

 

1. Use the Opencore-Simplify app on Windows and choose  a Mac version without the need for OCLP to enable WLFI. I chose Ventura in the process.

2. Choose the 7,1 Mac Pro SmBIOS model to build the EFI this is important.

3. In the EFI FOLDER, disable WEG.kext as this will inhibit the install.

4. Boot off the newly created EFI Folder and clean the NvRAM at least twice, this also is very important and must be done.

5. With the absence of the WEG kext, purple lines will appear on the screen for a few seconds but the installer will go on to the first language screen.

6. During the setup if you want to keep your usual Mac Model (SmBIOS) and not use the 7,1 Mac model, do not furnish all your data I.e Apple P/W etc.

7. Just fill in the ones that must be filled in before you can move on to the next window.

8. You have now reached the Desktop, you can now discard the 7,1 EFI Folder and use your usual one. I use Mac Model 20,20.

9. Reboot the machine off your desired Mac Model EFI in place which will show the change of model was successful.

I have tested this Method twice on a test disk and each step as described was successful.

 

Edited July 18, 2025 by MakAsrock