Question: Successful Windows 10 Upgrade, 2011 iMac 27", Anyone Else?
Just a data point for everyone out there who is considering an upgrade to Windows 10. How many others who have had a smooth transition are out there?
I have a mid-2011 iMac, 27", running OS X 10.10.4 (Yosemite) and I recently reinstalled Windows 7 after the previous Windows 7 installation, which was about four years old, became unstable and crashed. I'm also running BCA 5.1.4, and when I reinstalled Windows 7 I had a USB drive with the most recent Apple drivers for Windows (just downloaded for the Windows 7 reinstall) plugged into the machine, so presumably I am running the most recent drivers for this machine.
Regarding the Windows 10 upgrade, normally I am not an early adopter of anything; in this case, my intent was to download the installer and wait until Apple released El Capitan. I figured the possibility of avoiding a future purchase of Windows 10 made it worth attempting. However, when I clicked "Yes" on the "Try Windows 10" popup that I kept getting, I had no idea they would be delivering this upgrade via Windows Update, and there would be no easy way of stopping it. Even hiding the update would not prevent it from downloading, and their promise that I could download and install later really amounted to anytime in the next two days. There was no other option presented.
Since the reinstall of Windows 7 wasn't totally done, I figured I would take a chance, instead of possibly paying $119 or whatever W10 down the road. So I allowed W10 to be installed.
I'm happy to report the upgrade appears to have went off without a hitch. It wasn't a clean install, but rather an upgrade from W7. I was quite surprised at how painless it was, actually. When I had completed the installation, I was momentarily speechless to find that all my software appeared to be intact, and it seems that I can basically pick up where I left off with my W7 reinstallation. It's the first time that's ever happened in my experience; in the past when I have upgraded Windows, I've reinstalled everything.
In any case, they promised I'd get a free copy of W10 Home Edition, but I was upgrading from W7 Ultimate, and it says I now have W10 Pro. So far, so good; I'm posting this from my new W10 installation.
iMac (27-inch Mid 2011), OS X Yosemite (10.10.4)