In this video, I go over the process of installing macOS 10.15 Catalina on an unsupported Mac. This entire process involves the use of my 'macOS Catalina Pat. Click Reinstall macOS and wait for macOS Catalina to be installed on your machine. After the installation, restart the Mac in recovery mode and select the bootable drive once again. This time, select macOS Post Install. This will install all the third-party patches on your Mac that’ll make Catalina work. Once the patches have been installed.
Start up from macOS Recovery
Mac Os Catalina Install Estimating Time Remaining
Create a clean installation file of macOS 10.15 Catalina. If you have got this far and find your macOS Catalina still running slow, this might be the option for you. What this does essentially is wipes off all the data on your hard drive and installs the macOS from a USB Insaller. Catalina also has a Time-Shifting desktop which turns light into dark or dark into light according to your time zone. Here’s how to Install macOS Catalina on Unsupported Mac. The profile picture of macOS Catalina is a lovely picture of Santa Catalina Island which changes depending on the time. Luckily, there is a utility called macOS Catalina Patcher, which lets you download the complete setup file from Apple’s servers. Here is how you can use this app to get a copy of macOS Catalina.
Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
Macos Catalina Installation Error
Apple silicon
Turn on your Mac and continue to press and hold the power button until you see the startup options window. Click the gear icon labeled Options, then click Continue.
Intel processor
Make sure that your Mac has a connection to the internet. Then turn on your Mac and immediately press and hold Command (⌘)-R until you see an Apple logo or other image.
If you're asked to select a user you know the password for, select the user, click Next, then enter their administrator password.
Reinstall macOS
Select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.
Mac Os Catalina Install Stuck On Screen Time
Follow these guidelines during installation:
Macos Catalina Install Time For
- If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
- If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
- If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
- Allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.
After installation is complete, your Mac might restart to a setup assistant. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.
Other macOS installation options
When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions:
- On an Intel-based Mac: If you use Shift-Option-Command-R during startup, you're offered the macOS that came with your Mac, or the closest version still available. If you use Option-Command-R during startup, in most cases you're offered the latest macOS that is compatible with your Mac. Otherwise you're offered the macOS that came with your Mac, or the closest version still available.
- If the Mac logic board was just replaced, you may be offered only the latest macOS that is compatible with your Mac. If you just erased your entire startup disk, you may be offered only the macOS that came with your Mac, or the closest version still available.
You can also use these methods to install macOS, if the macOS is compatible with your Mac:
- Use the App Store to download and install the latest macOS.
- Use the App Store or a web browser to download and install an earlier macOS.
- Use a USB flash drive or other secondary volume to create a bootable installer.