From the Apple menu, select App Store, and then install any available updates.Once the installation is complete, you'll be asked to enter basic information, and have the option to transfer data from another computer or backup.If prompted, enter your Apple ID information. Follow the instructions on the screen, and then choose your hard disk.Click Reinstall OS X, and then Continue:.Once it's completed, quit Disk Utility.In the "Name:" field, give your disk a name. Next to "Format:", make sure OS X Extended (Journaled) is selected.Click your hard disk in the left column, and then click the Erase tab.If you see a screen asking you to select your main language, choose it, and then click the arrow.Restart your computer, and immediately hold down command-r until the gray Apple logo appears. Reinstall while erasing everything on your computer from the Apple menu, and install any available updates. When the installation is complete, select App Store.Click Install, and enter your Apple ID information if prompted. Follow the instructions on the screen, and then choose your hard disk. Click Reinstall OS X, and then Continue.If prompted, select your main language and then click the arrow.Restart your computer, and immediately hold down command-r until the gray Apple logo appears.Reinstall while keeping files, applications, and settings Secure is your only option, see Connect to an IU wireless network in macOS if booted from your Recovery HD. If you are on campus at IU, UITS recommends the wired Ethernet network instead of wireless. To reinstall or recover El Capitan, you must have an active internet connection. Reinstall El Capitan on a computer already running it From the Apple menu, select App Store., and then install any available updates.
Within the installer, click Continue, agree to the license agreement, and then choose the disk where you want to install El Capitan.Īfter you begin the installation, your computer may need to restart more than once before finishing, and then you may be asked to enter basic information. If it doesn't, or you don't want to complete the installation at this time, you can come back later and double-click Install OS X El Capitan in your Applications folder.
Upgrade from previous versions to OS X 10.11 (El Capitan)
Read more about erase, macOS, mode, operating system, OS X, partition, recovery, reinstall.
When the installation has finished the Mac should automatically restart itself and take you to its Setup Wizard which will ask you a series of questions to guide you through initial setup of your Mac.
If your Mac is running macOS Sierra or newer then click on Reinstall macOS.
Select your Wi-Fi menu and, if needed, enter the password needed to connect to this wireless network. Click on the Wi-Fi menu icon which appears in the upper right corner of the Mac’s screen.You’ll be returned to the main OS X Utilities window.When you have finished erasing the hard drive, click on the Disk Utility menu and select Quit Disk Utility.You will be warned that everything will be removed from the hard drive and that this is permanent. Click the Erase button and follow the prompts to erase the hard drive.It’ll be listed in the left-hand side of the Disk Utility window. Typically the hard drive is named Macintosh HD but yours could have a different name. Follow these guidelines during installation: If the installer asks to unlock your disk, enter the password you use to log in to your Mac. Click on your Mac’s internal hard drive. Select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.Click on Disk Utility and then click the Continue button.When the Mac has completed its startup, you should see a window similar this one:.Your Mac is now starting up in Recovery Mode. Once you see the Apple logo appear in the middle of the screen you can release the Command and R keys.This instructs the computer to startup from the Recovery Partition. Turn on the Mac and immediately press and hold down both the Command key and the R key.