Windows BitLocker has the ability to auto-unlock data drives if the system drive is also encrypted using BitLocker. Here, "Data Drives" refer to drives that are not the Boot/System Drive. So, these will be your Gaming HD, Media HD, and RAID Setup.
Below is a step-by-step guide on how to set this up if you decide to use BitLocker, with the assumption that you do not have a TPM (Trusted Platform Module). You may need a spare USB Stick, I'm not sure if Windows 7 allows systems without TPM to use BitLocker without a USB Key.
- Open Group Policy Editor (WIN+R and enter
- Navigate to
Computer Configuration \ Administrative Templates \ Windows Components \ Bit Locker Drive Encryption \ Operating System Drives and double click
Require additional authentication at startup.
- Set to
Enable and make sure "Allow BitLocker ..." in the options is checked.
- Now, open BitLocker Manager (
Control Panel\All Control Panel Items\BitLocker Drive Encryption).
- Go through the Wizard to configure your Data Drives.
- Go through the Wizard for your System Drive (USB Key and/or Password).
- Going back to the main BitLocker Manager, you can now set each Data Drive to auto-unlock.
Note that in step 6, if using Windows 10 (and iirc 8.1), you will get the option to either specify a password, or to create a USB Key, or (later) both.
I think on Windows 7, your only option is to create a USB Key.
Note that in step 7, if Windows 7 BitLocker Manager does not provide you the option of auto-unlock, open
powershell as administrator and type in the following command.
manage-bde -autounlock -enable $driveLetter
$driveLetter is the drive letter of your Data Drive (including the colon, for example
Now, on each boot, you will be required to put in the USB Key or the password. Then, the Data Drives will automatically unlock. If you ever need to access the data of the Data Drives on another computer when your current computer dies, you can use the password you set (or a USB Key, if you configured one) to unlock them. This applies to the System Drive as well, but you must mount your System Drive as a Data Drive on the other system (which also has to be running Windows).