Install Macos El Capitan

  1. Clean Install Mac Os El Capitan
  2. Reinstall Os X El Capitan
  3. Install Macos El Capitan Via Terminal
  4. How To Install Mac Os El Capitan From Usb
  5. How To Install Mac Os El Capitan
  6. Install Macos El Capitan.app

The new OS X El Capitan features a new Split View, features in Safari, Mail, Notes, Maps, and Photos, and more. To get your hands on all this new stuff, you have to install the operating system on. I created a USB disk with a bootable El Capitan as per this documentation. Plug-in your USB key on a turned-off computer. Start your Mac, press immediately OPTION (aka ALT) Select the Orange icon (aka a USB stick) labelled El Capitan. If it does not detect it after 10 sec and you only see your hard-drive. Try another USB port and wait 10 sec again.

If upgrading from macOS Sierra or later, your Mac needs 35.5GB of available storage to upgrade. If upgrading from an earlier release, your Mac needs up to 44.5GB of available storage. To upgrade from OS X Mountain Lion, first upgrade to OS X El Capitan, then upgrade to macOS Big Sur. 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.

Why do you need to download El Capitan through Terminal.

El Capitan is freely available from this link.


Here are the instructions.


Go to Section 4 and click on Download OS X El Capitan.


Clean Install Mac Os El Capitan

This downloads InstallMacOSX.dmg to your Downloads folder.


Install mac os el capitan dmg

The next section can only be done on a mac that is capable of running El Capitan,

a mac that came preinstalled with an OS later than El Capitan will refuse to do the next bit.


Install Macos El Capitan

When downloaded open to InstallMacOSX.pkg, double-click on

that and an installation window will open, this does not install El Capitan

but converts the InstallMacOSX.pkg to the Install OS X El Capitan.app which

you will find in your Applications folder, it should be 6.2GBs in size.


(If the installation window asks which disk you want to install to, you must pick

the disk that you are booted to at the time. Not any internal or external disk that

you want to eventually install El Capitan on, that is for later.)

Reinstall Os X El Capitan


Install Macos El Capitan Via Terminal

To start the installation of El Capitan double click on the Install OS X El Capitan.app.

How To Install Mac Os El Capitan From Usb


The copy of the install app self deletes after installing El Capitan, so make sure you keep a copy of the InstallMacOSX.dmg

How To Install Mac Os El Capitan

if you need it in future, or you could just make a copy of the Install OS X El Capitan.app prior to installing and moving it to

Install Macos El Capitan.app

an external drive for safe keeping. It is also possible to create a bootable USB installer disk using the Install OS X El Capitan.app

in the Applications folder and the createinstallmedia command in the Terminal app.


Capitan

Read the instructions here,

Sep 2, 2020 12:18 AM