How do I reinstall Mac OS after hard drive fails?

How do I reinstall Mac OS after hard drive fails?

Helpful answers

1. 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.
2. Partition and Format the hard drive: Select Disk Utility from the main menu and click on the Continue button.
3. Reinstall Lion/Mountain Lion.

How do I restore my Macbook Pro to its original operating system?

Here are the steps Apple describes:

1. Start up your Mac pressing Shift-Option/Alt-Command-R.
2. Once you see the macOS Utilities screen choose the Reinstall macOS option.
3. Click Continue and follow the on-screen instructions.
4. Select your startup disk and click Install.
5. Your Mac will restart once the installation is complete.

How to restore from time machine to new hard drive?

1 Again, turn on your Mac and hold down Command-R. 2 You’ll see a window named OS X Utilities. 3 Choose the Restore From Time Machine option. 4 Click Continue until you’re prompted to Select a Backup Source. 5 Select your Time Machine drive as the source and click Continue. 6 In the Select A Destination window choose your Mac’s hard drive.

How do you format a disk in time machine?

Time Machine will reformat the disk anyway before first use. If you want and you don’t need the data of your old backups, you can format the external drive. To do it, use Disk Utility. Open Disk Utility (in /Applications/Utilites) and choose your external drive in the sidebar. Then, go to Erase tab and erase the drive.

Why is my Time Machine not backing up?

Faulty backup drive: The most common cause of failing Time Machine backups are faulty backup drives. If you often carry your backup drive with you to work or school, there’s a chance that it could have suffered physical damage that is now causing it to be unreliable.

Can a Mac backup to a time machine?

Since Time Machine backups are stored on a dedicated backup drive, you can simply connect the drive to another Mac to restore files, apps, user accounts, and settings from your Time Machine backup. The entire process is fairly straightforward, and there’s not much that can go wrong if you follow our step-by-step instructions.