My Book Duo 20TB initialized in error, how to recover data

In the process of installing an additional hard drive, my MyBook 20TB (which I was using in RAID1 mode for a little over 9TB of actual storage) was un-itialized. I am being asked to initialize it, just like it was a newly installed drive. Needless to say, I am anxious to recover my data. I have not used the drive since this started, but it was almost full.

How can I recover my data and gain access to my hard drive (which worked perfect in every way before this issue)?

Your device could have been lock by a security password that you set up. You can download the WD Security to see if it detect the device is lock with a password.

Hi,

The information you provided is not that clear it will be great if you can elaborate your data loss case. What exactly you did to your drive and lost data from it.