I reserved the upgrade for my win8.1 pro tablet. Problem is, it doesn't have enough free space for the upgrade to download. <300mb left on primary ssd.

In this case, how do I upgrade it? Wait for MS to release ISO and via USB installer?

successfully installed by mounting iso in windows.

I didn't think this would be possible...lol

it installed with generic key however since I didn't see option to upgrade from win8.1pro. however, after mashing the windows activation button a few minutes, windows was activated!

this method seems not possible on my alienware r2x14 with the oem win8.1pro keys. the mounted iso installer is asking for a key...

This post has been edited by Morpheus2be: Jul 30 2015, 07:30 AM

audio for mkv movies also not working for me.

using built-in via hd audio

doesn't seem to be a driver issue. codecs need updating?