Cannot Install El Capitan

Installing El Capiton on an old Mac Book Pro today, I received the error:

OS X could not be installed on your computer

  • El Capitan can be downloaded from this link. Yosemite is available here. As in the step above, once you have downloaded the installer don't run it - just close the installer if it opens.
  • Simple resolution. Go to Open date & time preferences and uncheck 'set date and time automatically'. Backdate the date & time to the same date and time of your downloaded OSX EL Capitan Installation file. Step 4 reset the automatic date after Installation.
Cannot Install El Capitan

Ric, I can’t find any solutions anywhere. El Capitan seems easy, it’s very frustrating to watch loads of you tube videos where everyone else on the planet can get Sierra up and running in VM & VB. Also tried Sierra in VirtualBox but get repeated reboot loop or ‘wise guru’. Ian Stockdale June 14, 2017 at 3:26 PM Reply. Feb 25, 2020 Once you get the 'Install OS X El Capitan.app' from the Applications folder then you can use the install app to make a bootable USB installer or launch the 'Install OS X El Capitan.app' to do the install (Note: the 'Install OS X El Capitan.app' will automatically be deleted once it is run from the Applications folder, so it is a good idea to.

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.

Install

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.

Cannot Install El Capitan On Ssd

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 Os X Download

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

Easy fix, for a ridiculous error!