Do not try to install the version of El Capitan downloaded from the App Store Purchased page
If you are on an earlier version of OS X, you can download and install El Capitan from directly the App Store. OS X El Capitan on Mac App Store. Alternatively, if you currently on a later version of macOS and want to downgrade to El Capitan for some reason, you can officially do so only if you have purchased it earlier. I wanted to clear room on my computer, so I restarted the computer with cmd+r keys and opened OS X Utilities. I erased my drive and wanted to reinstall OS X El Capitan. After I agreed to the terms then selected my drive I signed into the Apple store. Make sure to boot from the USB device again, and select Boot OS X Install from Install OS X El Capitan once again, in verbose mode. The installation is a two-part process that continues once you re-boot into the USB drive. Finally, after about 25 more minutes, OS X El Capitan should be successfully installed on the target drive. Then, you clicked on the folder now in here, select the image file of Mac OS X El Capitan and click on the “Open” button. Select Mac OS X El Capitan ISO file. Within this step, you’re finished with the settings. Now is the time to make a digital machine to Mac OS X El Capitan. Consequently, you have to press on Create.
it probably has outdated certificates.
There is no need for you to install all the OS X's to get to El Capitan you can install directly from
Mac OS X Snow Leopard 10.6.8. After you have installed Snow Leopard you need to update it to
version 10.6.8 from here,
And if the installation fails you should not have to erase the mac and reinstall Snow Leopard.
If you do have an operating system on your mac and it is functioning then you can download
El Capitan using this method.
Open your Safari browser and click on the link below,
Go to Download OS and click on OS X El Capitan 10.11
this downloads InstallMacOSX.dmg to your Downloads folder.
The next section can only be done on a mac that is capable of running El Capitan.
This includes macs that have the potential to run El Capitan but have been upgraded to a newer OS.
A mac that came preinstalled with an OS later than El Capitan will refuse to do the next bit.
When downloaded open to InstallMacOSX.pkg, double-click on
that and an installation window will open, this does not install El Capitan
Download El Capitan Ios
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.)
To start the installation of El Capitan double click on the Install OS X El Capitan.app.
The copy of the install app self deletes after installing El Capitan, so make sure you keep a copy of the
InstallMacOSX.dmg if you need it in future, or you could just make a copy of the Install OS X El Capitan.app
Install Os X El Capitan From Usb
prior to installing and moving it to an external drive for safe keeping.
Install Os X El Capitan On A1229 Macbook Pro
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.
Read the instructions here,
Install Os X El Capitan From Usb
Sep 26, 2021 12:58 AM