How to erase an imac without disk?

Also, how do I wipe everything off my iMac?

Correspondingly, how do I force a factory reset on my iMac? After the iMac shuts down completely but before it begins to restart, hold down the Command (⌘) and R keys at the same time. The Mac will display the macOS Utilities menu, from which you can reinstall Mac OS.

Also know, what can I do with my old imac?

1. When is your Mac “too old”?
2. Recycle your old Mac with the Apple Trade In program.
3. Clean your Mac and get it up to speed.
4. Turn your Mac into a network-attached storage system.
5. Create an emergency Wi-Fi hotspot.
6. Install Linux on your Mac.
7. Back up your Mac.
8. Deauthorize and sign out of your accounts.

In this regard, how do I reformat a Mac hard drive?

1. Connect the drive to the Mac.
2. Open Disk Utility.
3. Select the drive you want to format.
4. Click Erase.
5. Give the drive a descriptive name and leave the default settings: OS X Extended format and GUID partition map.
6. Click Erase and OS X will format the drive.

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 restore my 2009 iMac to factory settings?

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 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 make my old iMac run like new?

1. Clean up system files and documents. A clean Mac is a fast Mac.
2. Detect & Kill Demanding Processes.
3. Speed up startup time: Manage startup programs.
4. Remove unused apps.
5. Run a macOS system update.
6. Upgrade your RAM.
7. Swap your HDD for an SSD.
8. Reduce Visual Effects.

Can you update old iMac?

If you want to run , but your Mac is older than 2013/2014, the new macOS just isn’t for you, as far as Apple is concerned anyway. However, despite this it is possible to run newer macOS versions on older Macs thanks to a patcher.

How do I destroy my iMac hard drive?

Just disconnect hard drive and unbolt. Not much of any tools required, and easy to do. Then you can just recycle the rest of the unit if you don’t want, and destroy hard drive by opening it and removing the disk platens (that look like silver CDs. Just lightly sand and scratch them up, and no one will ever read them.

How do you make sure your Mac is backed up?

Make sure your Mac Pro is on the same Wi-Fi network as your external storage device, or connect the storage device to your Mac Pro. Open System Preferences, click Time Machine, then select Back Up Automatically. Select the drive you want to use for backup, and you’re all set.

What hard drive format is compatible with Mac and PC?

For a hard drive to be able to be read and written to in both a PC and Mac computer, it must be formatted to ExFAT or FAT32 file format. FAT32 has several limitations, including a 4 GB per-file limit.

What is the best format for a Mac hard drive?

exFAT is a good option if you work often with Windows and Mac computers. Transferring files between the two operating systems is less of a hassle, since you don’t have to constantly back up and reformat each time.

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 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 restore 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.