I come with the same question - sorry nothing new.
How can you fix this issue? Can anyone point to the comment #ID that will fix it?
I cannot believe that I have a perfectly trash-able Asus because I cannot reinstall Windows. The Customer Service did not answer my emails yet. Worst machine and service ever.
Like everyone here my partition (image below) is well and healthy, but I cannot use F9 after the WIN8.1 upgrade: "missing drive" error
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