Select your startup disk on the left, then click Erase. Click the Format pop-up menu (APFS should be selected), enter a name, then click Erase. After the disk is erased, choose Disk Utility > Quit Disk Utility. In the Recovery app window, select “Reinstall macOS,” click Continue, then follow the onscreen instructions.
How do I wipe my Mac but keep OS?
Click on your hard drive and select the “Erase” tab. Select “Mac OS Extended (Journaled)” from the Format pop-up menu. Type a name for your hard disk. Click “Erase.” To ensure that your data can’t be recovered, click the “Security Options” button and select a method of deletion.
How do I wipe my Mac hard drive and start over?
How to Wipe a Mac Hard Disk Drive (HDD)
- Make sure your Mac is turned off.
- Press the power button.
- Immediately hold down the command and R keys.
- Wait until the Apple logo appears.
- Select “Disk Utility” from the OS X Utilities list. …
- Select the disk you’d like to erase by clicking on it in the sidebar.
What happens if you erase your Mac hard drive?
Erasing your Mac permanently deletes its files. If you want to restore your Mac to factory settings, such as to prepare it for a new owner, first learn what to do before you sell, give away, or trade in your Mac. Then erase your Mac as the final step.
How do I delete everything except operating system?
How Can I Securely Delete Everything Except the Operating System? Five Steps to Get as Close as You Can
- Delete and uninstall data and programs.
- Remove users.
- Run a disk cleaning utility.
- Delete some system files.
- Wipe free space.
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?
How to start Mac in Recovery Mode
- Click on Apple logo at the top left of the screen.
- Select Restart.
- Immediately hold down the Command and R keys until you see an Apple logo or spinning globe. …
- Eventually your Mac will show the Recovery Mode Utilities window with the following options:
2 февр. 2021 г.
How do I reformat a Mac hard drive?
How to Format an External Drive in OS X
- Connect the drive to the Mac.
- Open Disk Utility. …
- Select the drive you want to format.
- Click Erase.
- Give the drive a descriptive name and leave the default settings: OS X Extended format and GUID partition map. …
- Click Erase and OS X will format the drive.
29 дек. 2015 г.
Can you recover an erased hard drive?
Still, if you’ve wiped your hard drive and really wish you hadn’t, it’s entirely possible that your data can be recovered. When data is deleted from a hard drive, it’s not erased. Instead, the locations of the bytes that form the document, MP3 file etc. are removed meaning the data itself still exists.
What to do after deleting a Mac?
You should already be in the utility window after erasing your Mac. If not, restart your computer and hold down Command+R simultaneously until you see the Apple logo. Make sure to reinstall macOS through Recovery Mode, holding down Command+R. You may be asked to sign in with your Apple ID.
How do I wipe a hard drive without removing operating system?
Click Windows menu and go to “Settings” > “Update & Security” > “Reset this PC” > “Get started” > “Remove everything” > “Remove files and clean the drive”, and then follow the wizard to finish the process.
Does formatting a drive delete the OS?
One way to delete data is to format a drive, using the same command you would use to prepare the drive for a new installation of the operating system. While a formatted drive appears empty, however, the data that used to reside there may be recoverable, given the right tools.
How do I remove old OS from BIOS?
Boot with it. A window (Boot-Repair) will appear, close it. Then launch OS-Uninstaller from the bottom left menu. In the OS Uninstaller window, select the OS you want to remove and click the OK button, then click the Apply button in the confirmation window that opens up.