After a small tutorial to reset a computer in Windows 10, here is the method for Apple’s operating system, macOS. If you need to return your MacBook or Mac to its factory values in order to improve it a bit or sell it, follow the guide.
First of all, remember to back up your important files to external storage, and if you are performing the operation on a MacBook, plug it into the mains.
On macOS, the full reset process takes place in several steps:
Run the macOS Recovery Tool
Start or restart your Apple computer. At startup, press and hold the “Command” (⌘) and “R” keys until a white apple appears on the screen.
The recovery tool is launched and you just have to select the main profile and enter the associated password.
Erase data from disk
A list will then open. For this step, select Filedisk utility. This will allow us to delete all files from the SSD or HDD.
Select your internal storage (usually “Macintosh HD”) and click in the upper-right part of the window on wipe off.
A small confirmation window opens, we choose again wipe off.
Once the process is complete, you can close Disk Utility by clicking on the red cross at the top left of the window.
Then we find ourselves in the main menu of the recovery tool and this time we choose it Reinstall macOS (Big Sur in this case).
A new window opens, click to complete.
Accept the terms of the license agreement.
Finally, select the storage space (SSD or HDD) where you want to install macOS and click to complete.
The computer will then initiate the reinstallation process which may take some time (generally a few tens of minutes). When macOS offers you to choose your country, you can then shut down the computer (if you want to give it up for resale or give away), or start the various installation stages (in the case of a relocation).
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