Simply put, if your Mac isn’t old enough to run the latest El Capitan operating system then it won’t install. This basically comes down to your hardware is too old and therefore unsupported by Apple. We can fix almost any Apple Mac device. If it isn’t listed, we can probably still help you out with your Apple Mac product problems. OS x could not be installed on your computer el capitan 100% solution.Step 1: Check whether you have the same issue. Open the terminal.Step 2: Check the date. 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.
El Capitan Failed To Install
Jan 15, 2020 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 This happens because the the installer certificates are no longer valid when checked against the clock of your mac.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.
Installing El Capiton on an old Mac Book Pro today, I received the error:
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.
I checked Apple’s support Matrix (it is a very old macbook pro) at https://support.apple.com/kb/SP728?locale=en_GB and it was listed as supported.
After lots of Googling and investigation, I discovered that the date and time were not set to current, the macbook thought it was year 2000.
You can easily reset the time and date by following the steps below:
- Click Utilities on the menu bar
- Select Terminal
- Type date
- Confirm the date is wrong
- Type date 062112422016 (example: June 21st 12:42 2016)
- Exit terminal
- Click Restart
El Capitan Could Not Be Installed On Your Computer Without
Once the Date and time are configured you will be able to install OS X.
El Capitan Could Not Be Installed On Your Computer To Make
Easy fix, for a ridiculous error!