Reinstall Macos Catalina From Internet

Start up from macOS Recovery

Then tried to do the 'reinstall'. Since the HD was completely. Wiped, I had to do an Internet reinstall. I was stopped in my tracks with the message 'Can't download the additional. Components needed to install Mac OS X'. Some people had trouble with Internet connections in this Forum - I had. Absolutely no trouble with Internet connection. A macOS Utilities window will open, on which you will see the options to Restore From Time Machine Backup, Reinstall macOS version, Safari (or Get Help Online in older versions) and Disk Utility. Select APFS or macOS Extended format and confirm your action. Reinstall macOS Catalina on your Mac. Next thing, run a downgrade to Catalina by reinstalling it on Mac: Make sure your Mac is connected to the internet. Connect your bootable external drive. Click on the Apple logo and select Restart from the menu. While your Mac restarts, hold. Once you see the macOS Utilities screen choose the Reinstall macOS option. Click Continue and follow the on-screen instructions. Select your startup disk and click Install. Your Mac will restart. Steps of Reinstalling macOS Catalina from Internet. This is an easy method, however for amateur Mac users; the following is a step by step process to install macOS Catalina from the Internet. Open macOS Utilities and click on ‘Reinstall macOS’. Next, click on the option to ‘Continue’.

Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:

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.

How Do I Reinstall Macos Catalina

Follow these guidelines during installation:

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.

Reinstall Macos Catalina From Internet Explorer

You can also use these methods to install macOS, if the macOS is compatible with your Mac:

How To Do A Fresh Install Of Macos Catalina

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.