On windows 7 I had the same harddisks and sometimes the same happened, only difference was that Windows 7 was not so evil to kill everything and logoff. A terrible idea!
...and in the EXACT same boat as the overal problem with windows 8 which is them ruining things by chaotically combining the desktop 'get stuff done' interface with the simpler 'dumb' jumbo tablet one. If they don't fix the problem in win9 and properly separate them and give users the choice (sheesh, what happened to CHOICE I thought they were the masters at that), or even get worse and dumb things down even more, (like not getting rid of problems like this one), I'll just be forced to go Mac OS. I've already got it right at my fingertips since I'm running win8 on a 16GB RAM rMBP.