You have the option to monitor the process in the macOS Catalina Patcher main window, and the utility lets you know when the task is complete. Bottom line, if your Mac has been manufactured before early , chances are that you will not be able to install macOS Catalina on your computer. All things considered, macOS Catalina Patcher is a small and user-friendly utility designed to help you bypass this limitation if your Mac is not in macOS Catalina's compatibility list, created to be used as an unsupported Mac Mojave patch.
It does not matter whether you use macOS or Windows If the unexpected happens with an Apple computer, you can use a macOS bootable USB with the installation media to repair it. This is one of the main reasons you should consider making a macOS bootable USB when your device is working properly.
You can use a Windows 10, Windows 8. Connect the USB flash drive. If you have any data on the flash drive, remember to make a backup, as everything on it will be erased. Right-click the TransMac app and select the Run as administrator option. In this case, you may need to redo the entire process again.
However, this time you should use the following steps to use the Diskpart command-line utility on Windows 10 to create the appropriate GPT partition, and then follow the above instructions. Search for Command Prompt , right-click the top result, and select the Run as an administrator option. Enter the list disk command to view all drives connected to your computer and press Enter.
Type the select disk command followed the number assigned for the USB flash drive for example, select disk 4 , and press Enter. Enter the create partition primary command and press Enter to complete the process. Once you formatted the USB flash drive with a GPT partition, you can use the instructions mentioned above to use TransMac to create a bootable media, but this time skip steps No.
After the process completes, which can take up to an hour, connect the USB flash drive and power on your Mac holding down the Option key, select the USB drive to begin installing macOS. Type or paste one of the following commands in Terminal. These assume that the installer is in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. If it has a different name, replace MyVolume in these commands with the name of your volume. After typing the command: Press Return to enter the command.
When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password. When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the volume is erased. After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume.
Click OK to allow the copy to proceed. When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Monterey. You can now quit Terminal and eject the volume. Use the bootable installer Determine whether you're using a Mac with Apple silicon , then follow the appropriate steps:. Apple silicon Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing.
Turn on your Mac and continue to hold the power button until you see the startup options window, which shows your bootable volumes. Select the volume containing the bootable installer, then click Continue.
When the macOS installer opens, follow the onscreen instructions. Intel processor Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing. Release the Option key when you see a dark screen showing your bootable volumes. Select the volume containing the bootable installer. Then click the up arrow or press Return.
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