I'm not sure what the point of this blog post is? I don't think anyone expects that the upgrade will be problem free for 100% of users, especially considering t

I'm not sure what the point of this blog post is? I don't think anyone expects that the upgrade will be problem free for 100% of users, especially considering the numerous different hardware configurations. Also, if you look on the Apple Support forums you'll find people who have encountered problems upgrading OS X, so it is not like OS X has a 100% success rate at upgrading. I've upgraded my machine from 8 to 8.1 and it went flawlessly, although I did not write a blog post about that. Perhaps a good place to start would be attempting to look into the BSOD rather than just attempting the upgrade over and over?