How to reset a 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)

In this regard, 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.

Best answer for this question, how do I factory reset an old 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 2009 iMac without the password? First you’ll need to turn off your iMac. 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 afterward you should see the macOS Utilities window appear.

People ask also, how do I reset my 2010 iMac to factory settings?

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.

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 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 factory reset my IMAC 2015?

1. Restart the Mac in Recovery Mode (hold down Command and the R key during restart).
2. Use Disk Utility to erase the hard drive. Click on Disk Utility > Continue. Select the main volume and click Unmount then Erase).
3. Click Reinstall OS X and Continue. Follow the instructions to reinstall Mac OS X.

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 I reset my Mac password without a recovery key?

1. On your Mac, choose Apple menu > Restart, or press the Power button on your computer and then click Restart.
2. Click your user account, click the question mark in the password field, then click the arrow next to “reset it using your Apple ID.”
3. Enter an Apple ID and password, then click Next.

How do I factory reset my imac wireless keyboard?

Insert the disc into the optical drive and restart the computer. After the chime press and hold down the “C” key. Release the key when you see a small spinning gear appear below the dark gray Apple logo. After the installer loads select your language and click on the Continue button.

How do I reset my Mac without password?

Boot into the Mac OS X boot loader menu by holding down the OPTION key at system start. Choose the Recovery drive to boot into recovery mode and wait until the “Utilities” screen appears. Pull down the “Utilities” menu and choose “Terminal” At the command line, type “resetpassword” without the quotes.

How do I factory reset my Mac desktop without Apple keyboard?

Reboot your Mac. Hold down Option/Alt-Command-R or Shift-Option/Alt-Command-R to force your Mac to boot into macOS Recovery Mode over the internet. This should boot the Mac into Recovery Mode.

How do I boot my Mac into recovery mode?

1. Click on Apple logo at the top left of the screen.
2. Select Restart.
3. Immediately hold down the Command and R keys until you see an Apple logo or spinning globe.

How do you restore Internet on a Mac?

1. Shut down your Mac.
2. Hold down Command-Option/Alt-R and press the Power button.
3. Hold down those keys until you a spinning globe and the message “Starting Internet Recovery.
4. The message will be replaced with a progress bar.
5. Wait for the MacOS Utilities screen to appear.

Can you factory reset a Mac desktop?

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 you delete everything on your Mac?