Use a USB flash drive or other secondary volume to create a bootable installer.

When it comes to scaning and cleaning speed, the app is 3x faster than other 3rd parties Mac cleaner apps. As the name suggests this feature goes deeper when searching for files to get rid of.

Use the App Store or a web browser to download and install an earlier macOS. Deep Clean: If you are interested in knowing how to free up disk space in Mac then we suggest doing a deep clean after the quick clean.

That allows you to run Disk Utility, reinstall or wipe and install the system.

Use the App Store to download and install the latest macOS. Then many mac users reported that they cant install the macOS Catalina.

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

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.

Otherwise 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.

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.

When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions: When the new owner starts up the Mac, they can use their own information to complete setup. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.Īfter installation is complete, your Mac might restart to a setup assistant. Allow installation to complete without putting your Mac to sleep or closing its lid.It offers a wide range of features and helps optimize Mac so that you can use it to its optimum speed. Disk Clean Pro is one of the best tools to clean and optimize Mac. This tool allows you to remove 1000+ Mac apps completely, finds and removes broken service files of previously removed apps, can. If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD. App Cleaner & Uninstaller is the best uninstalling app for macOS Catalina.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 asks to unlock your disk, enter the password you use to log in to your Mac.Select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.įollow these guidelines during installation:

Catalina mac disk cleaner