- Jul 31, 2012
- HD4600 / RX 570
- Mobile Phone
When your Mac is ineligible to download Catalina or Big Sur
If your Intel Mac is from approximately 2011/12 or older (see post #2) you won't be able to download Catalina/Big Sur from the Mac App Store. Follow the instructions in this video to enable the download of Catalina directly from Apple on your older Intel Core 2 Duo or 1st/2nd generation Intel Core i based Mac.
Note: gibMacOS can also be used on newer supported Macs if you are having trouble with the download via the Mac App Store.
The reason you'll use gibMacOS is not to upgrade your older Mac. It's purpose is to allow the download of High Sierra, Mojave, Catalina or Big Sur so that you can create a USB installer to perform the macOS install on a PC.
Note: You can also use this method on your CustoMac to download and create the complete macOS install app. This is helpful when you try to download the full installer from the MAS and only get the small 19MB "stub" installer.
Also note that Mojave and High Sierra are available for download using this method. Apple pulls those from the MAS after so many months/years and then you cannot download them any longer. The video shows a download of 10.15.4 but you'll want to get the latest 10.15.7 version of Catalina which is now available.
If you need a version of macOS such as Yosemite, El Capitan or Sierra see the following guide to get those:
Watch the complete video from beginning to end. After the download of Catalina you'll need to build the installer app and then move it to your Applications folder. Required for the use of UniBeast for Catalina later on in the process. Currently, you won't be using Unibeast or Clover if you have an AMD Ryzen CPU system. Best to use OpenCore on an AMD build. Make the USB installer with the createinstallmedia method from Apple.
For those downloading Big Sur 11.0.1+ Watch this video.
High Sierra, Mojave or Catalina, watch this one.
Step by Step:
- Download the gibMacOS Master folder
- Right click and open gibMacOS.command
- Let all the files download (may take 20 minutes or more)
- Right click and open BuildMacOSinstallapp.command
- Drag & Drop the InstallESDDmg.pkg file into the Terminal Window
- Press enter and let the build happen. Takes a minute
- Move Install macOS Catalina App (8.23 GB) into your Applications folder
- Run Unibeast for Catalina to make your installer for your desktop PC.
- If you will install to a laptop, use createinstallmedia method to make the USB.
Before posting an issue or question with UniBeast please read the following: 1. UniBeast does NOT install anything on your hard drive, it CREATES a bootable USB stick. 2. UniBeast only works on English language systems and is not supported using any other language. 3. UniBeast is not...
Available macOS Products:
- macOS Big Sur 11.2
- macOS Big Sur 11.1
- macOS Big Sur 11.0.1
- macOS Catalina 10.15.7 (19H2)
- macOS Catalina 10.15.6 (19G73)
- macOS Catalina 10.15.5 (19F2200)
- macOS Catalina 10.15.4 (19E266)
- macOS Catalina 10.15.3 (19D2064)
- macOS Mojave 10.14.4 (18E2034)
- Install macOS High Sierra Beta 10.13.5 (17F66a)
- macOS High Sierra 10.13.6 (17G66)
- macOS Mojave 10.14.6 (18G103)
- macOS Mojave 10.14.5 (18F2059)
1. Double click on the .dmg file to mount it.
2. Click through all the prompts that come up.
3. Find your Sierra installer in Applications.
Now follow the directions here: https://discussions.apple.com/thread/251380944
To create a Sierra USB installer. After that, copy your custom OC EFI folder to the USB's EFI partition.
Your older Mac or Hackintosh must have at least an Intel Core 2 Duo processor and be able to run OS X Snow Leopard or a newer version of OS X to use Unibeast for Catalina or other versions of macOS. Lion for example, requires a 64 bit Intel processor to install that edition of Mac OS X. You should also download the newest Chrome or Firefox browser version that works on your older Mac. Old Safari versions won't pass the security requirements for most sites.
When you create your USB installer on an older Mac expect it to take anywhere from 30 to 60 minutes. Using USB 2.0 ports and mechanical drives can really slow down the creation process.
If you would like to buy, borrow or rent a used Mac mini to create your installer, the 2010 models are the best choice. They all have a Core 2 Duo CPU and at least 2GB of ram which is required for Lion through the Mojave version of macOS.
If you have a 2010 Mac mini or iMac still on Snow Leopard you can upgrade it to Yosemite for free. http://updates-http.cdn-apple.com/2...3ab5-4c92-bfe2-b725447a070d/InstallMacOSX.dmg again, the minimum of 2GBs of ram applies here if using a 2007/08 Mac mini.
MacBook Pros from late 2008/09 or newer will also work well. You can upgrade them to El Capitan for free if you have one that is still on Snow Leopard. http://updates-http.cdn-apple.com/2...cf50-4516-9011-228c78eda3d2/InstallMacOSX.dmg
What if I don't have a macOS download eligible Mac or Hackintosh yet ?
It's more difficult but you can use a PC running Windows 10 and gibMacOS to download any of these macOS versions.
A guide in setting up your USB installer using OpenCore, To start: A USB stick / flash drive or whatever you want to call them, USB2.0 16GB is preferred, possibly a USB3.0 *may* work. Sandisk makes a good USB installer, no I don’t have shares in them, they just seem to work well. Kexts...