Even if you found where it’s stored … it will be Encrypted
Not much point in having a Secure Password System to prevent Unauthorized Access if it’s Not Encrypted.
If you can still access the data on the My Passport (i’m guessing that’s what you have, because you haven’t told us) on Windows 7 …
then i would backup all the data onto another hard drive (preferably one without any passwords), and the erase/format the My Passport and reset the password with a new one, (that you can remember) and then you can unlock the drive on Win7 and Win 10
But it’s huge data. Almost 2TB full. I don’t have enough space in my laptop. If i can setup
WD utility and security (but no luck to install on Windows 7, just no nag screen appear when i click on executable setup).
If i succed, the previous password which is saved by Windows 7, will auto-filled or should input again?