I need to solve this by tomorrow morning. sudo /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install. how do I do that? On the IMac in question I cannot access any software that will allow me on to the internet to download Yosemite - I have Macbook Pro : Can I download the OS on to an external hard drive and use it to boot/install on the Imac? Where can I get an 'external' copy of Yosemite (I have looked but found nothing). I read online that this is a common problem when trying to install OS X El Capitan 'directly', and that I first need to install Yosemite. Restart by holding the Alt key (or Option key, depending on the keyboard. As a result SCS Computing Facilities (SCSCF) is phasing. This is the simplest possible install procedure: 1. but it will not install!! I keep getting prompted to re-enter my account info, which is accepted, but when I click on 'continue', another page appears again asking me to log in. El Capitan was replaced by Sierra 10.12, High Sierra 10.13 and the current release, macOS 10.14 Mojave. The problem is that when i do so (apple id etc all OK), i am prompted to install OS X El Capitan. The computer now boots up into the Utility Disk, prompting me to reinstall OS X.

Step 3: Start the Installation of macOS Sierra on the Non-startup drive.

Step 2: Download the macOS Sierra Installer from the Mac App Store. i thus did a full erase of all the data (only backing up the files I needed). Step 3: Clean Install macOS Sierra on your startup disk.

Hi, I am due to hand over my Imac (2012) tomorrow.

Install os x el capitan