Update: I looked into this and running VB within the virtual linux machine now standard with Chrome OS on a Chromebook does not appear to be all that straight forward regardless of whether or not the Chromebook has the storage space. Plus, for total compatibility with the ML update app which requires Win 10 (which requires a separate license) or specific compatibilty mode settings if using a "free" Win 7 VM. Also, there appears to be potential issues with with getting the VM to see the Chromebook USB ports. Finally, if you want to run Windows in VB, the Chrombook needs to not be running an ARM processor. See the Chrome OS Q&A thread on this page for more info. Seems a Chromebook user would be better off just borrowing a friend's Mac or PC or going to the library to get this done, unless 67GTA was successful at actually running the ML update on a Chromebook and not from a dedicated Linux machine running Win 10 in Vbox. There may be limited use Chrome OS or Android apps that could be used to run Win programs natively in the OS but that seems hit or miss and I personally really wouldn't want to be running a science experiment when trying to flash firmware, quite frankly.