This is often called Macintosh HD and appears at the top of the list. Click on it so that it's highlighted, then click the Erase button from the options in the main panel. A popup window appears with a few fields you'll need to complete.
How to erase a Mac that seems to lack erasure options
The first is Name , in which you should enter the title you wish to use for your new drive. Under this are two dropdown menus. Of course, to be able to use your Mac you'll need to reinstall the operating system. Hopefully, within a short space of time you'll have a fully functional Mac that's good to go.
With all that spare room onboard, you might want to check out our Best free Mac apps roundup, so you can get the most out of your new machine. Want to change the username on your Mac?
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Exos Achieve greater capacity. Systems Deploy better infrastructure. Lyve Data Labs. Data Security. Mac systems use Time Machine to backup data but you will need to make sure you keep any serial numbers for your installed software programs.
While Time Machine is designed to reinstall programs, relying on a seamless process without the serial numbers is risky. Time Machine is much faster than manually backing up data into the cloud or an external hard drive. Because Macs integrate devices so well, you'll need to do a couple of things before you reset to factory settings to protect data from other devices.
How to repair external hard drive without losing data on Mac?
First, Deauthorize iTunes so a new user can't log into your account. Turn off FileVault as well to prevent a new user from being able to access encrypted files after the reset. In the Apple Menu select System Preferences. Enter the username and password for your system then choose Turn Off FileVault.
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Disable the iCloud and iMessage through Preferences. Now you are ready to wipe the hard drive. Go to the Utilities window and choose Disk Utility. Choose the startup disk.
Erase and leave no trace
Click Erase. When it is done, restart the Mac to ensure you have erased the data. As with any reboot to factory settings, make sure to backup all pertinent data and record all serial numbers of programs you use. Keys F11 and F12 can also get you to recovery mode. From the options listed, select Restore Ubuntu to Factory State.
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