I just bought a new MacBook Pro, which I intended to downgrade to Mojave. However, clearly it can't since it shipped with Catalina. So, I thought of making a clone of my old MacBook Air hard drive which is Mojave, just to boot from when I need some older apps.
Is this as simple and straightforward as making a clone of the Air, then booting the MBP from it? While searching I've come across bits of gossip saying Catalina doesn't recognize Sandisk Extreme SSD as bootable, or has a different mode of creating volumes, etc., leading me to think there might be complications. Is SSD brand / type an issue, etc. So just thought I'd ask before starting such a project. Thanks for any pointers.
Is this as simple and straightforward as making a clone of the Air, then booting the MBP from it? While searching I've come across bits of gossip saying Catalina doesn't recognize Sandisk Extreme SSD as bootable, or has a different mode of creating volumes, etc., leading me to think there might be complications. Is SSD brand / type an issue, etc. So just thought I'd ask before starting such a project. Thanks for any pointers.