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After months of testing and development, Apple is finally letting you download and install Mac OS X 10.11 El Capitan for free from the Mac App Store. Apple initially introduced the world to OS X El Capitan during this year’s Worldwide Developer Conference (WWDC) back in June, as has become company tradition. In the months that have followed. OS X El Capitan Installer. Official OS X El Capitan Installer from the Mac App Store. Un-archive the zip archive and you will get the app Installer. A bootable ISO or bootable USB can be made from this installer. Instructions on how to do that are on the Internet/Youtube.

• Reinstall El Capitan on a computer alreadyrunning it

Upgrade from previous versions to OS X 10.11 (El Capitan)

1. Install OS X El Capitan 10.11.6.iso. Install OS X El Capitan 10.11.6.iso (7.14 GB) Choose free or premium download.
2. Nov 07, 2015 Install OS X 10.11 El Capitan on Hackintosh (Vanilla) Nov 7, 2015. Warning: Please follow these instructions at your own risk. I am not responsible for any damage or information loss that could result from following this guide.
3. May 17, 2016 Set the Format to OS X Extended (Journaled). Set the Scheme to GUID Partition Map. Click Erase to format the drive. Install OS X to the Target Drive. Exit the Disk Utility and click Install OS X. Click Show All Disks and select the drive you just formatted to install OS X on it. Finally, click Install. The process takes about 25 minutes.

1. From the Apple menu, select App Store....
2. When the App Store opens, search for and download El Capitan. If you don't already have an Apple ID, you'll need to create one. You can monitor the download process in the 'Purchased' section of the App Store.
3. Once the download is complete, the installer should automatically open.

   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.

   Within the installer, click Continue, agree to the license agreement, and then choose the disk where you want to install El Capitan.

   After 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.

4. From the Apple menu, select App Store..., and then install any available updates.

Reinstall El Capitan on a computer already running it

Reinstall while keeping files, applications, and settings

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.

Reinstall while erasing everything on your computer

Install 10.11.4 Os X

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 then click the Erase tab.
   2. Next to 'Format:', make sure OS X Extended (Journaled) is selected. In the 'Name:' field, give your disk a name. Click Erase.
   3. 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 hard disk.
   2. Click Install. If prompted, enter your Apple ID information.
   3. 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.
6. From the Apple menu, select App Store, and then install any available updates.