How to reset used imac?

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.

Also know, how do I reset my second hand iMac?

1. Turn your Mac computer off.
2. Press the power button to turn it on, then immediately press and hold Command (⌘) + R.
3. After a few moments, the macOS Utilities window should appear — this is known as Recovery Mode.
4. Select “Disk Utility” and click “Continue.”

As many you asked, can you reset an old iMac? Apple’s iMac computer has a built-in recovery mode that lets you reset the Mac to its original factory settings. This is a relatively straightforward and painless process that doesn’t take an advanced degree in computer science to accomplish.

Also, how do I wipe my iMac for disposal?

1. Shut down your Mac.
2. Turn on your Mac and immediately press and Command and R.
3. You may be prompted to select a user and log in with the password for that account.
4. From here, you’ll be presented with a utilities window.
5. Select Macintosh HD from the sidebar.
6. Click Erase and input a new name and format.

Moreover, how do you wipe out a Mac?

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 completely reset my Mac desktop?

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.

How do I factory reset my 2009 iMac without CD?

Select the hard drive on which Mac OS X is installed from the tree list on the left side of the window. Open the “Erase” tab. Select “Mac OS Extended (Journaled)” from the “Format:” drop menu and enter a name for the hard drive in the “Name:” text entry field. Click “Erase…” to clear all of the hard drive’s contents.

How do I factory reset my iMac 2010?

1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu.
3. Click the Erase tab.

How do I factory reset my 2008 iMac keyboard?

1. Start you Mac while pressing the Option key (in your Windows keyboard press the Alt key) until the Startup Manager appears:
2. Select Recovery HD and then click the upward-pointing arrow below it to boot from Recovery HD.
3. After a brief delay, you’ll see the Mac OS X Utilities screen.

How do I wipe my Mac hard drive before selling it?

Just shut down your Mac, and then turn it back on. As soon as you hit the power button, hold down Option + Command + P + R on the keyboard. You can release the keys after about 20 seconds. Once done, your final step is to erase the hard drive and reinstall macOS.

How do I factory reset my 2009 iMac?

1. Shutdown iMac.
2. Unplug power cord from back of iMac.
3. Press and hold power button for 20 seconds.
4. Restore power cord; power on iMac.
5. Immediately on hearing Startup Chime, press and hold Command-Option-P-R keys (⌘⌥ P R)

How do I reset my iMac to factory settings without password?

First you’ll need to turn off your Mac. Then press the power button and immediately hold down the Control and R keys until you see the Apple logo or spinning globe icon. Release the keys and shortly afterwards you should see the macOS Utilities window appear.

How do I do a factory reset?

1. 1 Tap Settings
2. 2 Tap General Management.
3. 3 Tap Reset.
4. 4 Tap Factory data reset.
5. 5 Tap RESET.
6. 6 Tap DELETE ALL. Please be patient as phone resetting takes some time.
7. 1 Tap Apps > Settings > Backup and reset.
8. 2 Tap Factory data reset > Reset Device > Erase Everything.

How do I restore my Mac Air to factory settings?

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.

How do you hard reset a MacBook pro?

1. To force a restart your MacBook, you need to press and hold down the Command (⌘) button, the Control (Ctrl) key, and the power button at the same time.
2. Hold these keys down until your MacBook’s screen goes blank and the computer restarts itself.

How do I reset my Mac to default terminal?

Correct. Just quit Terminal. app, and make a backup of the following file, then delete it. Terminal will create a new, default one once you restart it.