[SOLVED] How to reinstall OS X 10.11 onto a Mac now that macOS Sierra is out?

[kevinakerberg]

Hi everyone, I recently received an early 2008 iMac from a friend, but its hard drive has been wiped completely blank. So I thought no problem, I'll just reinstall OS X 10.11, but here's the thing: now that Sierra is out, the El Capitan installer is no longer available on the Mac app store. Also, this machine is not capable of running Sierra. How can I install El Capitan onto this Mac? I have a 2011 27" iMac as well as a 2011 MacBook Pro 15", and I was thinking I could make a bootable backup of my MBP (iMac already has Sierra on it) and boot the 2008 machine from that? Not sure if that would work though. What should I do?

 

[COLGeek]

See here. Good luck.

http://www.apple.com/shop/help/downloadable_software?afid=p231%7Ccamref%3A1101lmYI&cid=AOS-US-AFF-PHG