Os X 10.11 Install

This content has been archived, and is no longer maintained by Indiana University. Information here may no longer be accurate, and links may no longer be available or reliable.

On this page:

Completing a fresh installation of OS X 10.11 can take a while, so be prepared for at least 30 minutes to several hours, depending on the speed of the drives in use. When finished, OS X El Capitan will boot into a brand new clean install, running through the initial OS X setup process on the Mac as if the Mac was brand new. OS X El Capitan 10.11.4 Update The OS X El Capitan 10.11.4 update improves the stability, compatibility, and security of your Mac, and is recommended for all OS X El Capitan users. This update:. Adds the ability to passcode-protect notes containing personal data in Notes.

  • Reinstalling Yosemite on a computer alreadyrunning it

Upgrading from previous versions to OS X 10.10 (Yosemite)

Os X 10.11.4 Download

OS X 10.10 (Yosemite) is no longer available for purchase from theMac App Store. If you have a previous version of the operating system,and your computer meets the system requirementsfor OS X 10.11 (El Capitan), you can upgrade directly to thatversion instead; see ARCHIVED: Install or upgrade OS X 10.11 (El Capitan)

Install

Reinstalling Yosemite on a computer already running it

Os X 10.11 Install
To reinstall or recover Yosemite, you must have an active Internetconnection. If you are on campus at IU, UITS recommendsthe wired Ethernet network instead of wireless. However, if IUSecure is your only option, see Connect to an IU wireless network in macOS if booted from your Recovery HD

Reinstalling while keeping files, applications, and settings

Os x el capitan 10.11 installer

Os X 10.11 Installer

Capitan

Os X 10.11 El Capitan

  1. Restart your computer, and immediately hold down command-r until the gray Apple logo appears.
  2. If prompted, select your main language and then click the arrow.
  3. Click Reinstall OS X, and then Continue. Follow the instructions on the screen, and then choose your hard disk. Click Install, and enter your Apple ID information if prompted.
  4. When the installation is complete, select App Store... from the Apple menu, and install any available updates.

Reinstalling while erasing everything on your computer

  1. Restart your computer, and immediately hold down command-r until the gray Apple logo appears.

  2. If you see a screen asking you to select your main language,choose it, and then click the arrow.
  3. Click Disk Utility, and then Continue.
  4. In Disk Utility:
    1. Click your hard disk in the left column, and thenclick the Erase tab.
    2. Next to 'Format:', make sure Mac OS Extended (Journaled)is selected. In the 'Name:' field, give your disk a name.
    3. If you would like to securely erase your data, click SecurityOptions..., adjust the slider accordingly, and clickOK.
    4. When you're ready, click Erase..., and thenErase again to erase your disk.
    5. Once it's completed, quit Disk Utility.
  5. Click Reinstall OS X, and then Continue:
    1. Follow the instructions on the screen, and then choose your harddisk.
    2. Click Install. If prompted, enter your Apple IDinformation.
    3. Once the installation is complete, you'll beasked to enter basic information, and have the option to transfer datafrom another computer or backup.
  6. From the Apple menu, select App Store, and then installany available updates.