Why do you need a separate PIN anyway? Shouldn't your Windows password be enough? Having to enter two different codes makes it unlikely a majority would use the system. I would be surprised if iOS or Android required a separate PIN for encryption.
You need a separate pin because windows lives on the encrypted disk so you need to decrypt it before you can boot completely.
You need a separate pin because windows lives on the encrypted disk so you need to decrypt it before you can boot completely.