How do I wipe my Mac and install an older OS?

How do I wipe my Mac and install an older OS?

Here are the steps Apple describes:

1. Start up your Mac pressing Shift-Option/Alt-Command-R.
2. Once you see the macOS Utilities screen choose the Reinstall macOS option.
3. Click Continue and follow the on-screen instructions.
4. Select your startup disk and click Install.
5. Your Mac will restart once the installation is complete.

How do I do a clean install of OS X 10.6 Snow Leopard?

What to Know

1. Insert the Snow Leopard install DVD. Double-click Install OS X > Utilities.
2. After reboot: Select language and Utilities. In the Apple menu bar, select Utilities > Disk Utilities > Format.
3. Follow the Snow Leopard basic install instructions to complete the installation.

How do I factory reset my Mac OS X Leopard?

Once your files are backed up, shut down your MacBook Pro. Plug it into the AC adapter, and then boot it back up. Finally, press and hold “Command-R” (the “Command” and “R” keys at the same time) to start the restore process. Hold these keys until the Apple logo appears on the screen, and then release them.

How do I restore my Mac computer to factory settings?

To reset your Mac, first restart your computer. Then press and hold Command + R until you see the Apple logo. Next, go to Disk Utility > View > View all devices, and choose the top drive. Next, click Erase, fill out the required details, and hit Erase again.

How do I reset my Mac to factory settings?

How to Factory Reset: MacBook

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.

Is there a way to erase and reinstall macOS?

Erase and reinstall macOS. You can restore your Mac to factory settings by erasing your Mac, then using macOS Recovery, the built-in recovery system on your Mac, to reinstall macOS. Important: Erasing the volume removes all the information from it. Before you start, back up your essential files and information to another storage device.

How do I Wipe my Mac OS X Drive?

Insert a compatible Mac OS X install DVD, restart with the C key held down, use the Disk Utility to erase the internal drive, and install a fresh OS. the drive and everything on it. 1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came with your computer.

How do I erase and reinstall macOS Big Sur?

Type a name for the volume in the Name field, click the Format pop-up menu and choose APFS, then click Erase Volume Group. When the erase process is complete, click Done, then choose Disk Utility > Quit Disk Utility. In the Recovery app window, select “Reinstall macOS Big Sur,” click Continue, then follow the onscreen instructions.

How do I erase a volume on my MacBook Pro?

In the Recovery app window, select Disk Utility, then click Continue. In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar. Type a name for the volume in the Name field, click the Format pop-up menu and choose APFS, then click Erase Volume Group.