If your attached screen capture is from the new cloned 6TB hard drive then check the Diagnostic screen to see what it is saying about new drive. Also review the alerts notifications in the Alert icon (
) to see if anything there provides additional information on the drive error.
I ran into issues trying to use certain clone software to clone a first gen My Cloud drive. It was hit or miss. Some software just didn’t work to clone the drive properly I think due to the fact the My Cloud uses Linux. Clonezilla worked once I put the drives into USB to SATA adapters and didn’t use the desktop PC’s internal SATA ports.
Personally if I continue to try cloning a My Cloud drive and it doesn’t work, which I’ve experienced in the past on a first gen. I moved to following Fox_Exe’s method of restoring the My Cloud operating system to the new hard drive then manually copy over the user data from the old drive to the new.
Second gen:
https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/
https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/_Unbricking_en.txt
