How do I wipe my Mac and start over?
Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. Release the keys after about 20 seconds. This clears user settings from memory and restores certain security features that might have been altered. Learn more about resetting NVRAM or PRAM.
How do I install OSX after erasing hard drive?
How to Install macOS By Wiping Hard Drive First
- Restart your Mac.
- While your computer is restarting, press and holding the Command + R keys.
- Click Disc Utility and then click continue.
- Click View > Show All Devices.
- Select your Mac’s drive and then click Erase. …
- Click Erase and fill in the name, format, and Scheme.
How do I reinstall OSX without losing files?
Option #1: Reinstall macOS without Losing Data From Internet Recovery
- Click the Apple icon>Restart.
- Hold down the key combination: Command+R, you will see the Apple logo.
- Then choose “Reinstall macOS Big Sur” from utilities window and click “Continue”.
Does reinstalling macOS delete everything?
2 Answers. Reinstalling macOS from the recovery menu does not erase your data. However, if there is a corruption issue, your data may be corrupted as well, its really hard to tell. … Reinatalling the os alone does not erase data.
How do I bypass Internet Recovery on Mac?
Answer: A: Answer: A: Restart the computer holding down the command – option/alt – P – R keys before the gray screen appears. Continue to hold until you hear the startup chime for the second time.
Why won’t my Mac let me erase the hard drive?
It’s not usually possible to erase the startup disk because your Mac is using it to run macOS. Recovery Mode is a special partition on your Mac you can use to restore from a backup, reinstall macOS, get online support, or erase your startup disk. You should back up your Mac before trying to erase or reformat it.
Where is recovery on Mac?
Command (⌘)-R: Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet. macOS Recovery installs different versions of macOS, depending on the key combination you use while starting up.
How do I remove previous owners from my iMac?
How to Delete User Accounts from an Old Mac
- Select System Preferences from the Apple menu, click the Accounts icon, click the Lock icon, and enter your password. …
- Select Logout from the Apple menu. …
- On your new computer, triple-check that all the files for all accounts on the old machine have been transferred.
How long does it take to wipe a Mac?
I’d estimate anywhere from 1 to 5 hours would be the norm but it’s possible for it to take up to 12 hours. Make sure you erase everything securely before selling it so the buyer can’t recover your saved passwords. Several seconds if done properly: What to do before selling or giving away your Mac.
What can I do with my old imac?
What to do with your old Mac
- When is your Mac “too old”? …
- Recycle your old Mac with the Apple Trade In program. …
- Clean your Mac and get it up to speed. …
- Turn your Mac into a network-attached storage system. …
- Create an emergency Wi-Fi hotspot. …
- Install Linux on your Mac. …
- Back up your Mac. …
- Deauthorize and sign out of your accounts.