I've been trying to get around to installing 10.11 (El Capitan) on my daughter's hand-me-down early-2008 Macbook Pro. (It's been on 10.6 to support some older software.) What with family emergencies, it's taken me a while to get everything cloned onto a new SSD and ready for the upgrade.
Last night, I finally got everything put together, and went off to the App Store to pull down the El Cap upgrade.
Since Sierra was released yesterday, El Capitan no longer existed, at least as far as App Store searches were concerned.
"Well," I thought to myself, "I didn't really want to pull Sierra yet, since it's brand-new and unproven. But I guess we could give it a try."
Again, nope. Sierra quite reasonably has dropped support for this eight-plus-year-old machine. It's not an option.
So, not only can I not install the newest OS release on this machine -- I can't even get to the most recent release that IS supported on this machine. It's as though it never existed.
Fortunately, I found a workaround -- I'd "bought" El Cap for another machine, and so it was still available in my "purchased items" on my own App Store account. By using that account, I was able to pull down the full image.
I've gotta tell you, though -- finding out that I'd missed the El Cap availability by a few hours, and that as far as Apple was concerned I could rot on 10.6 forever, did NOT give me warm fuzzies about the company. I've been a Mac user for over 30 years (!), but on days like this, I find that as much embarrassing as anything else.