1. El Capitan Could Not Be Installed On Your Computer System
2. Install Os X 10.11

'OS X Could not be installed on your computer. But I was confident that 11 would make running El Capitan as guest OS a piece of cake. OS X El Capitan won't install on these two MacBook Pros (8,1). Let's find out!Support the show and get in the credits http://Patreon.com/KrazyKenWant.

During the installation of OS X El Capitan on my Mac Book Pro, the install fails and I am left with 'OS X Could not be installed on your computer File System verify or repair failed. Quit the installer to restart your computer and try again.' No matter how many restarts I do it does not install. Also repair does not work in disk utility. I'm running into this problem too. I have spent all morning trying to get a Catalina Mac Mini to run a VM of El Capitan so that I can still use some of my old 32bit software. I keep running into this: 'OS X could not be installed on your computer. No packages were eligible for install'. During the installation of OS X El Capitan on my Mac Book Pro, the install fails and I am left with 'OS X Could not be installed on your computer File System verify or repair failed. Quit the installer to restart your computer and try again.' No matter how many restarts I do it does not install. Also repair does not work in disk utility.

Having a trouble with the Mac OS X El Capitan installation? Got this error message screen “OS X could not be installed on your computer – file system verify or repair failed” while installing El Capitan? Don’t worry. Today we are going to share how to fix this error message. We have two methods to fix this problems. The first method we are going to try is to scan your Mac hard drive using the Disk Utility, and if it doesn’t work we are going to re-install Mac OS X El Capitan through the Recovery Mode. Let’s get it started!

First Method – Disk Utility

Step 01. Power off your Macbook or iMac completely.

Step 02. Turn on your Mac pressing and holding the Command + R Keys at the same time.

Step 03. Release the keys when you the Apple Logo appears.

Step 04. Please select Disk Utility and click on Continue.

Step 05. Select your hard drive and click on First Aid.

Step 06. It will ask you to perform checking the hard drive (Would you like to run First Aid on “Your Hard Drive”). Please select Run.

Step 07. Wait until the processing is done and when the processing is finished, restart your Mac. (If this method didn’t work for you, we recommend you to re-install Mac OS X using the second method below.)

Second Method – Re-install Mac OS X

Step 01. Power off your Macbook or iMac completely.

Step 02. Turn on your Mac pressing and holding the Command + R Keys at the same time to boot into the Recovery Mode.

Step 03. Please select Reinstall OS X and click on Continues.

Step 04. Now it will download and install the Mac OS X on your Mac computer. It will take some time to finish the installation process. Hope you successfully install El Capitan on your Macbook or iMac.

I just downloaded LibreOffice 5 on my Mac running El Capitan (OS X 10.11).

When I try to open it, I get a message (see picture):

“LibreOffice” will damage your computer. You should move it to the Trash.

El Capitan Could Not Be Installed On Your Computer System

This is different than the message I’ve gotten in the past with some applications, under previous OS X version, that the application was downloaded from the Internet, where I was able to by pass the warning by right-click on the app and clicking Open. That results in the same message this time; there is no option to open it.

Could my download from LibreOffice.org have been infected? Has Apple just gotten more aggressive with its malware warnings?

Install Os X 10.11

How do I verify I have a non-infected copy and run it?