OS X could not be installed on your computer.
No packages were eligible for install. Contact the software manufacturer for assistance.
Quit the installer to restart your computer and try again
'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. I updated two computers from Yosemite to El Capitan with no problem. Then I tried to update a friend's computer from 10.6.8 Snow Leopard to El Capitan and I got caught up in the limbo where it keeps downloading but won't install and worse yet, won't go back to the previous system.
Oh dear… When trying to install OS X 10.11 (El Capitan) you may encounter this message. This happens because the the installer certificates are no longer valid when checked against the clock of your mac.
Don’t panic though as this is easily fixed using Terminal, so don’t restart immediately.
- Click Utilities on the menu bar
- Select Terminal
- Type date 062112422016
- Exit Terminal
- Click Restart
When you restart the mac and try the installer again it will now believe the certificates are valid and will continue as it should.
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.
El Capitan Could Not Be Installed On Your Computer Faster
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.
Install El Capitan On Mac
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.
Can't Install El Capitan
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.