How to erase hard drive on imac?

1. Turn on your Mac and continue to press and hold the power button until the startup options window comes up.
2. When the Utilities window appears, select Disk Utility.
3. In the sidebar, choose Macintosh HD.
4. Click the “Erase” button, then select a file system format and enter a name for it.

You asked, how do I clear my entire hard drive on a Mac?

1. Music, movies, and other media can use a lot of storage space.
2. Delete other files that you no longer need by moving them to the Trash, then emptying the Trash.
3. Move files to an external storage device.
4. Compress files.

Moreover, how do I clear everything off my imac?

Similarly, how do I free up hard drive space?

1. Uninstall unnecessary apps and programs. Just because you’re not actively using an outdated app doesn’t mean it’s still not hanging around.
2. Clean your desktop.
3. Get rid of monster files.
4. Use the Disk Cleanup Tool.
5. Discard temporary files.
6. Deal with downloads.
7. Save to the cloud.

Correspondingly, how do you delete photos from a Mac?

1. Launch the Photos app.
2. Select the pictures you want to delete.
3. Alternatively, hold Shift to select a range of photos or Cmd to select multiple individual photos.
4. Right-click on the selected images and select Delete from the drop-down menu, or press the Delete key.

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 you delete a file that won’t Delete on a Mac?

Type in “rm -f ” without the quotation marks, and with the space after the f. Then find the file that wont delete, and drag it to the Terminal window, and the path to that item should appear. Double check that this is the thing you want to delete, then press enter.

How do you wipe a computer clean to sell it?

1. Open Settings.
2. Tap System and expand the Advanced drop-down.
3. Tap Reset options.
4. Tap Erase all data.
5. Tap Reset Phone, enter your PIN, and select Erase Everything.

How can I clean up my computer?

1. Wipe down your computer.
2. Clean Your keyboard.
3. Blow dust buildup out of computer vents, fans and accessories.
4. Run check disk tool.
5. Check surge protector.
6. Keep PC ventilated.
7. Back up your hard drives.
8. Get antivirus software to protect from malware.

Is it safe to Disk Cleanup?

For the most part, the items in Disk Cleanup are safe to delete. But, if your computer isn’t running properly, deleting some of these things may prevent you from uninstalling updates, rolling back your operating system, or just troubleshooting a problem, so they’re handy to keep around if you have the space.

Will defragmenting free up space?

Because defragging only re-organises files, it will not free up disk space. It will require some space to do its work, resulting in higher disk usage until it has finished.

Why can’t I delete Photos from my Mac?

Answer: A: Where in Photos are you trying to delete the photos from? Select a photo in a Moment, the either enter the key combination ⌘⌫ (command-delete) or ctrl-click or right-click the photo and select “Delete 1 photo” from the pop-up menu. Then open the Recently Deleted album and feet the photos permanently.

How do I permanently delete Photos from my Mac?

1. Launch the Photos app on your Mac.
2. Click the Recently Deleted folder in your sidebar.
3. Click on the pictures or videos you want to permanently delete.
4. Click on the Delete button at the top right.

How do I delete Photos on my Mac to free up space?

If you want to delete the original Photos Library to save storage space on your Mac, you can drag it from its original location (the Pictures folder of your home folder) to the Trash. Then empty the Trash.

How do I factory reset my iMac without 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.

How do I restore my iMac to factory settings without CD?

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.