This is probaly called WD smartware - i don't really know atm. In this case things become more complicated, as you'd have to try take an image of the encrypted drive first etc harddrive is crypted/protected with the buildin manufactor mechanism. Which then gives the question if your drive does self-erase after multiple wrong passwords had been entered. Do you passwords contain things that are in a dictionary? What is your typical password length? What characters do you use, which don't you use? If you have a weak password scheme, it might be possible to automatically brute force. The main question is if you have a fixed password scheme that you use for your passwords, and how good that is. It will be really hard and take long, but it might be possible:
WD Smartware for example back in 2015 were easy to crack due to them using a non-cryptographic random number generator. In the end, it all depends on if any security issues in the product make brute-forcing the password easier. First of all, what technology did you use to encrypt the harddrive? WD smartware? Bitlocker? Truecrypt? Veracrypt?
