El Capitan Not Installing

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.

Failed

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.

I have had this problem also, but after going into the Applications folder and initiating the install, it goes thru some gyrations, then restarts, but El Capitan is still not installed. Note: My MacBook Pro has Parallels installed to enable Windows programs, but it was not open during the install. 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. 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.

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.

El capitan unable to install

You can easily reset the time and date by following the steps below:

El Capitan Not Eligible For Install Data; El Capitan Install Loop; Oct 24, 2019 I was able to install El Captain on another USB Drive (64GB) connected GIGABYTE PC. This went absolutely fine and I now have a fully indepentent USB Drive which i can simple connect to the PC and the El Captain OS boots up.

  • 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

Install El Capitan App

UnableHow to download el capitan

Once the Date and time are configured you will be able to install OS X.

Os X El Capitan Not Installing

Easy fix, for a ridiculous error!