I want to install on one hard drive and be able to pull the drive out if I want to keep El Capitan.
Cheryl - you gave me a download link before to get a clean ISO install of El Capitan." />
Sincerely, El Capitan My Capitan Dear Capitan, One thing is clear at this point: Apple is pretty happy with how OS X looks, feels, and functions. The improvements they’ve made over the past. If your Mac isn't compatible with the latest macOS, you might still be able to upgrade to an earlier macOS, such as macOS Catalina, Mojave, High Sierra, Sierra, or El Capitan. To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date. Can't update from OS X El Capitan - help!! I currently have an iMac (20-inch, mid 2009) running on OS X El Capitan (version 10.11.6). I want to update it as I appreciate that El Capitan is well out-of-date and my apps (and system in general) is starting to reallllllly slow down. I have tried via the classic Software Update route but nothing. I rarely use by mac. Right now I wanted to install a new program on it but it says it won't run unless the OS is 10.12. I only have 10.11.6 (El Capitan) right now and I can't see any updates for upgrading it to 10.12. Questions: How can I force upgrade it to 10.12? I can't see any updates for it in the store to upgrade it to 10.12. If your Mac isn't compatible with the latest macOS, you might still be able to upgrade to an earlier macOS, such as macOS Catalina, Mojave, High Sierra, Sierra, or El Capitan. Support.apple.com More info about upgrading your OS here.