Archive. This is an archive of the Apple Support Community. Discussions are being restored and soon you will be able to read and post here again.
Milo1767
User level: Level 1 (4 points)

mid2007 iMac w/ OS X El Capitan (version 10.11.6, 2GHz Intel Core 2 duo processor, 4GB 667 MHz DDR2 SDRAM); how can I upgrade to Catalina? do I need an external memory card to provide sufficient SDRAM?

My mid2007 iMac w/ OS X El Capitan (version 10.11.6, 2GHz Intel Core 2 duo processor, 4GB 667 MHz DDR2 SDRAM); how can I upgrade to Catalina? do I need an external memory card to provide sufficient SDRAM?

Posted on Nov 30, 2019 8:55 AM

1 reply

VikingOSX
User level: Level 10 (131,878 points)

Nov 30, 2019 8:59 AM in response to Milo1767

El Capitan is the last operating system that your 2007 iMac can install. Use any iMac manufactured in 2012 or later to install Catalina. See How to upgrade to macOS Catalina.

Originally posted at discussions.apple.com/thread/250903138