Few months ago, my dad's boot drive crashed on his old mac Pro (g5 style case). He and a computer tech tried to revive it but they couldn't get any os to boot...
I decided to have a go and try to resurect the thing. I was able to boot to ubuntu in a matter of minutes, so i was sure the mother board and everything was still working.
Then I fought 2 whole days to be able to install mac os 10.11 (i think that was the latest supported on this hardware). I had to go back to 10.6 first because that was the last version with a retail dvd. Even if all my other copies of mac OS are legit (and I know they are), they wouldn't want to install, because i downloaded them with another computer. Then, how am i supposed to download anything with this computer if i can't install any os?
This is meant to have you buying a brand new 6k$ computer, instead of a 100$ hdd, not a way to improve security.
Few years ago, my old macbook pro was going very slooooooooow ever since i upraded it to 10.12 (i had been using 10.7 for a while, but sadly it was obsolete). Suddenly, i couldn't even use Firefox or Mail or anything. That was a nightmare. That's at this time that i switch to ubuntu and never looked back. The laptop is still working perfectly well today.
To be fair, i transitioned, my main workstatiln from w7 to w10 recently and i suffered a big loss in performance (and many bsod).
It's incredible how apple and microsoft seems to make their OSes less and less performant. And less and less practicle... And less and less open...
I'dlike to switch everything to Linux, but my main DAW (Nuendo) is not compatible... and the choice of DAW is not mine to make. (Also, nuendo is very good for what we do here, mostly cartoons and TV post).
Sorry for the rants,
Cheers,
Thomas