Hello,
To enable this for your drive:
- Sign in to Windows and unlock your secondary drive manually (if it is currently locked).
- Open the Start Menu, type Manage BitLocker, and press Enter.
- Locate the drive (Fixed Data Drive) in the list.
- Click on the link that says Turn on auto-unlock.
The drive will remain encrypted while the computer is off or booting. Once you successfully sign in to Windows, the system will automatically unlock that specific drive for you instantly.
If this solution helps you achieve the specific behavior you were looking for, please click "Accept Answer".