Reinstall Mac Os When Your Hard Drive Failed Short Test
Reinstall Mac Os When Your Hard Drive Failed Windows 10

Jul 09, 2020 Read Case Study: Whooping 94% data recovered from unmounted external drive on MacBook Pro. Mac hard drive running slow. Problem: Aging and prolonged usage can slow down a Mac.Also, a lot of other factors can degrade your Mac performance, like hard drive becoming full, macOS being outdated, several login items enabled, many apps running in the background, hardware issues, etc. Feb 03, 2020 Use the arrow keys on your Mac to select the external drive and tap Enter. This cloned drive can be re-cloned back to the main drive if you decide to restore your Mac, or it can be used to access all the original files from your computer after you have wiped the internal hard drive. Step2: Step 2: Deauthorise your iTunes account. If you’ve taken a backup of your failed Mac hard drive before its failure by using Time Machine, then use it to restore data to a new solid-state drive. Step 1: Replace the failed Mac hard drive with the new SSD. There are plenty of DIY videos that can help you perform the task. Feb 03, 2020 Use the arrow keys on your Mac to select the external drive and tap Enter. This cloned drive can be re-cloned back to the main drive if you decide to restore your Mac, or it can be used to access all the original files from your computer after you have wiped the internal hard drive. Step2: Step 2: Deauthorise your iTunes account.

If you've encountered a problem with macOS, the solution might be to reinstall the system on your Mac. This can be done by any Mac owner, but it can be a little bit complicated. You'll need to put your Mac into macOS Recovery, which gives you tools to diagnose problems on your Mac, as well as reinstall the operating system.

Here's how to reinstall macOS using Recovery mode.

Entering macOS Recovery

macOS Recovery has tools at its disposal that allow you to diagnose problems with your Mac's hard drive, reinstall macOS, and restore from a Time Machine backup. You can enter Recovery by pressing certain key combinations. The combination you choose will determine which version of macOS will be installed on your system when you select Reinstall macOS.

Press Command - R to install the latest version of macOS that was installed on your Mac without installing a later version.
Press Options - Command - R to upgrade to the latest version of macOS that's compatible with your Mac.
Press Shift - Option - Command - R to install the version of macOS that came with your Mac, or the version closest to it that's still available.

How to check your startup disk with Disk Utility in macOS Recovery mode

The first thing you'll want to do is make sure your Mac's startup disk is healthy. You'll need to use Disk Utility to do that.

Click Disk Utility when in macOS Recovery.
Click Continue.
Click on your Mac's startup drive in the Disk Utility sidebar. It should be the drive at the top of the sidebar if there are multiple drives.
Click First Aid.
Click Run. First Aid will run, checking the health of your Mac's drive. This process could take a little while.
Click Done.
Click Disk Utility in the Menu bar.
Click Quit Disk Utility.

How to erase your startup disk in macOS Recovery mode

If you need to start completely fresh, then you'll want to erase your startup disk using Disk Utility. If you want the content on your Mac to stay intact, skip to the next section.

Click on your startup disk in the Disk Utility sidebar.
Click Erase.
Click the Format drop-down menu.
Click on the format you want to use for your drive. If you're running macOS High Sierra or later on a Mac with an SSD, your choices will be some form of APFS.
Click Erase. Your drive will proceed to be erased.

How to reinstall macOS while in Recovery mode

The next step is to reinstall macOS.

Click Reinstall macOS.
Click Continue.
Click Continue.
Click Agree.
Click Agree.
Click on the drive on which you wish to install macOS.
Enter your Apple ID and password if you're asked to, though you might not be.
Click Install.

Your Mac will now go through the normal macOS installation process, eventually restarting. If you're starting from scratch, you'll need to set up your Mac from scratch.

Reinstall Mac Os When Your Hard Drive Failed Short Test

Questions?

If you have any more questions about reinstalling macOS on your Mac, let us know in the comments.

Updated December 2019: Everything is up to date through macOS Catalina.

macOS Catalina

Main

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If you don't get a startup chime then you may have a worse problem. Just be prepared.

What year is your MBP? From 2011 onward you would use Internet Recovery. Earlier you would need to install the original software that came with the computer on software restore DVDs.

Internet Recovery

Install Mavericks, Lion/Mountain Lion Using Internet Recovery

Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.

Boot to the Internet Recovery HD:

Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.

Partition and Format the hard drive:

1. Select Disk Utility from the main menu and click on the Continue button.

2. After DU loads select your newly installed hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.

3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed. Quit DU and return to the main menu.

Reinstall Lion/Mountain Lion. Mavericks: Select Reinstall Lion/Mountain Lion, Mavericks and click on the Install button. Be sure to select the correct drive to use if you have more than one.

Note: You will need an active Internet connection. I suggest using Ethernet

if possiblebecause it is three times faster than wireless.

This should restore the version of OS X originally pre-installed on the computer.

DVD Installation:

Clean Install of Snow Leopard

Be sure to make a backup first because the following procedure will erase

the drive and everything on it.

1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came

Reinstall Mac Os When Your Hard Drive Failed Windows 10

with your computer. Insert the disc into the optical drive and restart the computer.

After the chime press and hold down the 'C' key. Release the key when you see

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