- #ERASE HARD DRIVE MAC REINSTALL OS MAC OS#
- #ERASE HARD DRIVE MAC REINSTALL OS INSTALL#
- #ERASE HARD DRIVE MAC REINSTALL OS UPDATE#
Several of the changes include: the introduction of the Apple File System, support for NVMe drives, and the usual batch of security updates. With macOS 10.13, otherwise known as High Sierra, Apple introduced an ambitious EFI update. Choose the Disk Utility from the startup window if you haven’t already done so.All data on the drive will be deleted, so hopefully you have a backup. If you just had a problem booting into the OS and want to keep your files, but Disk Repair could not fix the problem, you may be forced to erase the disk. Now is the time to decide if you are erasing your disk or not. If you are selling the computer, you’ll want to erase the disk so that you can wipe your personal information before handing it off to someone else. It will let you know if there are errors and if they were fixed.Click “Run” and allow the Disk Utility to do its work.CLick on “First Aid” from the options on the top of the window.Click on your hard drive, which will be displayed in the upper left corner.Choose the “Disk Utility” option from the startup window.If you are having problems with your hard drive trying to repair is definitely the first step. Here you will find options to repair your drive or erase it. The next step in many cases is going to be to click on Disk Utility.
When it boots you will see a screen that looks like this: The macOS recovery boot menu
#ERASE HARD DRIVE MAC REINSTALL OS UPDATE#
#ERASE HARD DRIVE MAC REINSTALL OS MAC OS#
In order to get the Mac OS already on your system hold Command+R.Push the power button then hold down the appropriate keys to enter recovery.Some older computers (2010-2011 MacBooks and iMacs) need to download an EFI update in order to use internet recovery. Which option you choose is up to you but it will determine the first step for you.
#ERASE HARD DRIVE MAC REINSTALL OS INSTALL#
You can choose to simply restore the exact OS that is on your computer already, or install the latest available version.
There are different options, depending on why you want to enter recovery mode. The first thing you’re going to need to do is turn your computer off. It is very likely that you will lose them in this process. If you can, backup any files that might be important to you. Erase all contents of the internal storage and then install macOS with a clean slate.įirst things first.Reinstall OS X system files while preserving your personal files.You can roll back to an earlier state using Time Machine.The option you should choose depends on your situation. It provides three separate options for recovery, allowing you quite a bit of flexibility in the event that you encounter a boot problem. Recovery Mode is a lot more than a simple way to restore your Mac to it’s factory state. Wink, wink) and you want to wipe your drive. Maybe you need a fresh start after upgrading your SSD. Whatever your reason, we’ll show you the steps to to start the built-in Recovery Mode and explain all that it’s capable of. Maybe you’re preparing to sell your old MacBook (say, to a certain company that will give you a good price for it. Maybe you’re seeing the dreaded flashing question mark when you booted your Mac. There are lots of reasons why you might want to boot into Apple’s Recovery Mode.