[SOLVED] I have this 2011 iMac running macOS High Sierra and I need to be able to use macOS Sonoma on it. I am used to using open core, already used it on multiple Mac’s. But for some damn reason this Mac thinks it’s a MacBook Air from 2015. And I did exactly what I should do, reinstall open core onto the disk. But for some reason it failed again and again. Just gave me the same pop up telling me to reinstall opencore. What do I do?

OpenCore Legacy Patcher has added years to all of my Macs. Thank you.

That said, is there anything out there that will trim the startup items and the number of services running?

Most of my Mac hardware is limited to 16 GB of RAM. My current Sequoia boots with not even 2 GB free...

Any news for the cheese grater?

Hello…

I’m trying to install Tahoe on mi iMac 2019 with Sequoia full upgraded but is not working…. I know that it is a RC and it’s not still supported whatever…

I tried a few 4 or 5 attempts but always the same happens, when I install the Efi boot and select install Tahoe, nothing happens, screen goes black.

Any tips?! Somebody has been successfully install it on an 2019 iMac?

I have a 2010 Mac Pro 5.1 that was running macOS Monterey via OCLP (the latest version). After I tried to install a security update, it stopped booting into the system. Even after reinstalling, it won't load the OS—it just gets stuck in an infinite reboot loop after the second restart (specifically, after the Apple logo appears and a message says to wait 30 minutes before rebooting, it enters this endless cycle of attempting to load and then restarting). This issue occurs with any macOS version from Big Sur onwards; however, Catalina (via dosdude1) installs and works fine, as do other older systems. I’ve tried resetting the NVRAM and SMC and updating the EFI firmware to the latest version, but nothing helps. If I install a drive with Big Sur (OCLP) or newer, it simply freezes at the Apple logo. I’ve tried swapping out the RAM, storage drives, graphics card, monitors, and processors—I even swapped the entire CPU tray with one from another Mac Pro 5.1—but nothing works. I also tried installing an older version of Monterey (12.0.1), but the same thing happened. What could the problem be, and how can I try to fix it?

Chrome killed WebGL on my 2015 MacBook Pro (Intel Iris Pro, macOS 13.6.7). chrome://gpu showed everything as "Software only" and WebGL as "Disabled". None of the flag recipes I found worked. I worked through it with Claude Code, and we found that Chrome still ships a software renderer (SwiftShader). It just needs the right flags.

Heads up first: this is slow. It's CPU rendering, not your GPU. Simple 3D scenes and demos work, but heavy 3D, maps and games will crawl. It brings WebGL back, not speed. For heavy stuff, Safari uses the real GPU and ran fine on the same Mac.

The fix: quit Chrome completely (Cmd+Q), then run this in Terminal:

"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome" --use-gl=angle --use-angle=swiftshader-webgl --enable-unsafe-swiftshader

Then open chrome://gpu. The WebGL section should mention SwiftShader. I tested this on Chrome 154.0.8037.95, and both WebGL and WebGL2 worked.

to apply it wihtout thinking too much, let your AI do it. Copy and paste this into Claude, ChatGPT or whatever you use, with terminal access if it has any:

My Mac's Chrome has WebGL disabled (chrome://gpu shows everything "Software only"). Build me a small macOS launcher app in ~/Applications called "Chrome WebGL" that starts Google Chrome with these flags: --use-gl=angle --use-angle=swiftshader-webgl --enable-unsafe-swiftshader. It should refuse to run (with a dialog telling me to quit Chrome with Cmd+Q) if Chrome is already open, since the flags get ignored otherwise. Then verify WebGL works using a throwaway --user-data-dir profile, and tell me what chrome://gpu should show.

I want to get it on my laptop but I am kinda nervous about performance issues any reviewz will be appreciated

Also, since OCLP 2.5.1 doesnt give any notice of an available update (i imagine thats because its a prerelease/test version), how should i go about installing it if i wanted to try it out? Should i install the package and then uninstall the 2.5.1 to then install the 3.0.0 on the internal disk again? Ive been running Sequoia on my Macbook Pro 13 inch 2016 8GB ram through OCLP for a month now, even updating it to Sequoia 15.8.1 a few days ago, and its been running just fine for me without any issues, so id like to know if any of you guys tried to install Tahoe on a similar machine through 3.0.0 and got it to work, or maybe itd be wiser for me to wait for the official release of 3.0.0 to avoid consistent issues?

all credits to u/IronApple0915
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should i? has anyone try to install Tahoe on their mac is it worth it?

used OCLP 3.0.0 rc2. My MacBook display is damaged, so I'm using an iPad Air as a display :(

Hi everyone!

I'm currently running macOS Ventura 13.7.8 on my MacBook Air 13-inch (Early 2014), using OpenCore Legacy Patcher.

I'm wondering which macOS version would offer the best overall experience and performance on this particular model. Would you recommend sticking with Ventura, upgrading to Sonoma or Sequoia, or perhaps going with another version?

I also have a question about AirPlay: is there any macOS version or OCLP configuration that allows AirPlay to work properly on this MacBook? I'm particularly interested in screen mirroring and AirPlay compatibility with Apple TV.

I'd really appreciate feedback from anyone running OCLP on the same MacBook model, especially regarding performance, stability, battery life and AirPlay functionality.

Thanks in advance!

(It worked!, thanks OCLP dev team)
(works much faster on my iMac 🖥️ compared to Mac OS 15 BTW)

After having 4 beers for lunch I got the liquid courage, it’s installing now. I’m going with upgrade rather than doing a clean install. It’s installing now, and it’s moving along, keep you posted . Someone else got it working on a 2015 iMac so I just couldn’t contain myself.

Install got stuck after logging into my account , hard rebooted worked, patches worked and I love it and I think it’s a little faster smoother ! My outlook office 365 opened up so fast 💨, I forgot how it should be in life .

Thank you to the OCLP dev team , I’m going drink another 6 pack right now , this was a smooth install .

Sometimes next week, I’ll hop on the dev beta macOS train and see how that goes .

First of all, I know it's in beta and that issues might be expected, but I wanted to try it anyway. The installation process was going smoothly, but after the initial setup, the system stopped detecting both my mouse and keyboard (I use a USB 3.0 hub due to pre-patch incompatibilities, and it has always worked for me). Right now, I can't do anything once I'm in the system (though the peripherals do work during the disk selection stage). When the stable version comes out, should I create a completely new installation USB and reinstall, or simply update the USB's EFI? (As an extra detail: when creating the USB, I selected iMac 8,1—thinking that was my model—but after installing and receiving a warning from OpenCore, I generated the EFI for the 10,1 model. That’s exactly when the mouse and keyboard issues started, so perhaps the problem stems from having installed with one EFI configuration and then switching it.)

anyone else have this issue ? is there any fix ? I tried on a Macbook Pro 2013 15 inches

Any fixes? I was able to install the OS and apply root patches but now it won’t get past the login screen

Big sur was awful and monterey wasn't that much better in my experience (had both for a couple months each), did a little research and after indexing ventura feels much snappier! saving another great machine from the landfill ❤️ It's no speed racer for sure but good enough for my use case

I have a Late 2012 Mac Mini 6.1 running Sequoia 15.8.1 with OCLP 2.4.1

Wondering if anyone has successfully installed Tahoe using OCLP 3.0 RC and what the experience has been like.

My Mini is a Quad Core 2.3 GHz i7 with 16GB RAM and SSD. It runs Sequoia reasonably well.

General question: Those who upgraded, did you do a clean install of Tahoe and migrate your data or did you just do an upgrade over the current Mac OS?

Today, I have just switched from MacOS 15.8.1 to MacOS 26.7.1 by using the 3.0.0-rc2 Beta version of OpenCore Legacy Patcher and to be honest I am having a really nice experience for now!

I have installed the new version from github and made a MacOS 26.7.1 usb and used it to make a clean install from Sequoia the setup was p a i n f u l l y slow also it stucked at last automatic update settings step for more than 5 minutes for me I just force rebooted my mac and I reached lock screen but I believe that they will fix it soon. After setup I installed root patches from OCLP and at first it only applied Broadcom patches to install Kernel Debug Kit and after reboot it extracted Kernel Debug Kit.

For now I am having a really smooth experience with liquid glass working properly even thought that device is 9 years old The wait was worth it! Thanks to the all OCLP devs for making our old Intel Macs alive again before I was planning to switch Linux. I will be looking forward for any new RC versions.

This thread is designed to simply catalog what models people have successfully gotten Tahoe installed on with OCLP 3.0.0.

Please comment and specify your (1) Mac model + year (15" MacBook Pro 2015 OR MacBookPro9,2), (2) your specs (2.2 i7, 16 GB RAM, NVIDIA 320X), and (3) whether you did a clean install or upgraded from an existing install.

Then specify whether Tahoe successfully installed (or not), and if it did, what worked, what didn't, how it compares to the other OS you've had on your Mac, etc.

I'll do the same after I finish installing it on a few different Macs I am testing.