Reset//Rest Mac OS

adminMay 30 2021

Reset//Rest Mac OS

Oct 29, 2011 iMac, Mac OS X (10.6.7) Posted on Oct 29, 2011 6:16 AM Reply I have this question too (743) I have this question too Me too (743) Me too.
Mar 21, 2020 To reset your NVRAM, you use exactly the same procedure you once used to reset PRAM. Shut down your Mac. Press the power button, and as soon as you power up the laptop, hold down Command-Option-P-R.
The first step is to start your Mac in Recovery Mode. To do that, shut down your Mac and then restart it while holding the CMD+R keys. Release the keys when the Apple logo appears on the screen.
Sep 04, 2020 Insert your USB Drive and open Disk Utility. Once opened, there is a button that looks a bit like a book, click it and press Show All Devices You should see your USB in the side bar.

Step 1: Back up your Mac. Resetting a Mac to factory settings gets rid of all the data stored on that machine, so we recommend that you make a backup of the data first.

Start up from macOS Recovery

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.

Follow these guidelines during installation:

How To Reset Mac

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:

System Reset For 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. 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.

Reset Mac Password

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

Mac Os 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.