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.
Jun 19, 2020 As explained here, OS X 10.11 'El Capitan' fails to install because it is too old (the technical reason being that the signing certificate is no longer valid). But you can trick the OS X installer into thinking that it is 2017 and it will happily run without any errors. I purchased a used 2012 Macbook pro 15 inch (A1278) and the previous owner did a hard factory reset. I have tried every option that I can find online and still can't get the OS to install. I have taken it into apple Genius Bar and they were of no help. Internet Recovery mode will not boot. Mar 14, 2016 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.
Download El Capitan Ios
Quit the installer to restart your computer and try again.
Mac Os X Cannot Be Installed On This Computer El Capitan
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:
Os X El Capitan Cannot Be Installed On This Computer Windows 7
- 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
Once the Date and time are configured you will be able to install OS X.
Os X El Capitan Cannot Be Installed On This Computer Without
Easy fix, for a ridiculous error!