How to do a clean install of catalina on imac?

1. Complete a full Time Machine backup before beginning – do not skip making a full backup.
2. Connect the MacOS Catalina installer drive to the Macs USB port.
3. Reboot the computer.

In this regard, how do I wipe my Mac and reinstall Catalina?

1. Use the mouse pointer or the arrow keys on your keyboard to select the disk called Install macOS Catalina in the drive list that appears on the screen.
2. Once the USB drive has booted, select Disk Utility from the Utilities window, choose your Mac’s startup drive from the list, and click Erase.

Considering this, how do you delete everything on a Catalina on a Mac?

1. Start up your computer in macOS Recovery:
2. In the Recovery app window, select Disk Utility, then click Continue.
3. In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar.

Correspondingly, how do I do a clean install of MacOS Big Sur?

1. Be certain you have made a full backup fo the Mac.
2. Connect the MacOS Big Sur USB installer drive to a USB port on the Mac.
3. Shutdown the Mac or reboot.
4. Next, boot into Recovery Mode, which differs depending on if it’s an Intel Mac or Apple Silicon Mac:

Also the question is, can you delete install MacOS Catalina? The installer should be in your Applications folder and is just over 8 GB. It needs about 20 GB to expand during installation. If you only downloaded it, you can drag the installer into the trash and delete it. Once the installer has done its job and Catalina is installed, it deletes itself.Make sure your Mac Pro is on the same Wi-Fi network as your external storage device, or connect the storage device to your Mac Pro. Open System Preferences, click Time Machine, then select Back Up Automatically. Select the drive you want to use for backup, and you’re all set.

How do I restore my Mac to factory settings?

1. Restart your computer: hold the power button > select Restart when it appears.
2. While the computer restarts, hold down the ‘Command’ and ‘R’ keys.
3. Once you see the Apple logo appear, release the ‘Command and R keys’
4. When you see a Recovery Mode menu, select Disk Utility.

How do I factory reset my Mac desktop 2021?

1. In the Apple menu in the top left corner of the screen, choose Restart.
2. As the system is restarting, hold both the Command and R keys on the keyboard at the same time until you see the Recovery Mode window.
3. Enter your admin password to confirm the action.

How do I do a clean install on my imac?

1. Start up your computer in macOS Recovery:
2. In the Recovery app window, select Disk Utility, then click Continue.
3. In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar.

How do I select a disk to install OSX?

1. Choose Reinstall macOS (or Reinstall OS X) from the utilities window.
2. Click Continue, then follow the onscreen instructions. You’ll be asked to select your disk. If you don’t see it, click Show All Disks.
3. Click Install. Your Mac restarts after installation is complete.

How do you clean a Mac?

1. Clean up cache. You’ve probably heard “Remove your cache” as a web browser troubleshooting tip.
2. Uninstall apps you don’t use.
3. Clean out useless duplicates.
4. Empty the Trash.
5. Reduce clutter.
6. Delete large and old files.
7. Remove old iOS backups.
8. Wipe out Language files.

Can not delete install macOS Catalina app?

1. Restart in recovery mode (click Apple logo then Restart, right after that press Command + R).
2. In recovery mode, select the “Utilities” dropdown (upper left) and select “Terminal”.
3. Type csrutil disable .
4. Restart.
5. If the Catalina install app (or whichever file) is in the trash, simply empty it.

Can you delete old OS on Mac?

If you have no applications that you want to run in Classic mode in OS X, and you have no need to start your computer up in OS 9 instead of OS X from time to time, then yes, you can trash the System Folder and the Applications (OS 9) folder.

Can I delete previous Mac updates?

If your Mac automatically downloaded the new macOS update installer, you can delete it and recover space. Click the Finder icon in the lower left corner of your screen. … (You can optionally drag the app icon to the Trash on the Dock if you’re more comfortable doing that.)

How long should a Mac backup take?

Preparing backup shouldn’t take more than 5 or 10 minutes if your Mac is new and you barely have anything on it.

Can I backup Mac to Google Drive?

Following a two-week delay, Google Inc.’s new Backup and Sync tool, which launched last month, is now available to download for Mac and Windows users. The new tool allows users to back up all their files and folders from a Mac or personal computer to their Google Drive account.

How do I restore factory settings on my MacBook air?

1. Hold down the Command and R keys on the keyboard and turn on the Mac.
2. Select your language and continue.
3. Choose Disk Utility and click Continue.
4. Choose your startup disk (named Macintosh HD by default) from the sidebar and click the Erase button.