My opinion on Windows 7 has soured considerably. Its permissioning system is terrible and has cost me a lot of time in trying to make external hard drives readable. No doubt permissioning functions as designed. The problem is the user interface. Most users of Windows 7 Home Premium are running one computer or a home network and don’t need to restrict file access. For them there should be a conspicuous button on the file-sharing or security tab of the Properties window that overrides permissioning for a file, folder or drive. Otherwise if you do something like try to read an external HD that you formerly used as an internal HD in another Windows computer you get permission errors and have to perform complex tasks to make the drive readable. This is like requiring all drivers to type a numeric combination and blow into a breathalyzer before they can start their cars — after first googling around for instructions. The fact that a small subset of users needs a particular feature is no reason to impose that feature on all users.