I bought a new imac with Mojave. I want to have the option to use El Capitan for some older apps.
Can I make a partition that is bootable in El Capitan? Mojave is saying I can't install El Capitan on a partition.
How would I have the option to boot up in El Capitan and still use Mojave when I want to?
iMac 27", macOS 10.14
New iMacs cannot run any macOS system earlier than the version with which it came pre-installed. El Capitan cannot be booted on your new iMac, so you will not be permitted to install it on a connected volume.
If running El Capitan was important to you, then you should not have bought a new iMac, and you should have kept your old computer so you would maintain compatibility with El Capitan.
New iMacs cannot run any macOS system earlier than the version with which it came pre-installed. El Capitan cannot be booted on your new iMac, so you will not be permitted to install it on a connected volume.
If running El Capitan was important to you, then you should not have bought a new iMac, and you should have kept your old computer so you would maintain compatibility with El Capitan.
What older apps do you have that will run in El Capitan and not Mojave?
Photoshop CC3
Final cut 7
That is very frustrating. I wish I had known.
What did you do with your old Mac?
I still have it. I was hoping to retire it. Is it possible to erase the new mac and put El Capitan on it? Not that I would do this, but is it possible?
For the new Mac, once again, No.
You cannot run any version of macOS earlier than the version that came pre-installed on your new iMac. Use your old Mac if you can.
No you cannot put El Capitan on the new Mac, you still have the old Mac, it will probably run for years so use it for CS3.
How to have two mac os systems on my imac
