> I have to get a new SSD every time Apple releases an OS because I don't want to run their latest OS and break all my audio hardware, but need something to build + release on for the app stores.
Yes that's what's occurring but I end up needing at least 2 for this version and the previous one because you can't always rely on the new OS to function properly for a few months.
(Still, I can't complain too much - it is a free entire OS upgrade unlike OSX upgrades of yesteryear)
Can't you just reuse the SSD?