Not 100% sure on this, I just poked around based on your question... If you go to Control Panel ->Device Manager -> Disk Drives and right click on the drive and click Properties there are 5 tabs at the top. If you go to the last tab, called Details, there is a spot in Device Description where you can drop down a whole menu of options... One of those is called Safe Removal Required.
Perhaps that will toggle your issue off?