One irritation with the Windows 8 Consumer Preview is the System Maintenance process; this has two modes – inconvenient and bloody inconvenient. Once you get the “Maintenance in Progress” message, you can kiss goodbye to any productive use of the machine until it’s finished – whenever that is, you get no clue. If you notice the Action Center Icon, the clock indicates that Auto Maintenance is running.
This opaque process is uninteruptible and provides no clue as to what it is actually doing. I haven’t yet found a satisfactory way to turn this off. It effectively locks up my machine. Its not backing up the system, that much I do know.
You can find a short explanation in the Action Center under Maintenance, but no help on turning it off. All you can do is try to set the time when it kicks off. Just open the Action Center, click the arrow next to maintenance, and click change maintenance settings. You can effectively postpone it off from there. This will not work while maintenance is being performed.
Moreover it only offers a choice of time and wake up option.
You can disable it permanently by going through the Services.msc page, but as I’m still not au fait with all it does, the all-or-nothing option seems a little draconian. AJS