Help i screwed up!

WD External Drives External Drives for Mac
1

have a studio edition drive 2 tb.   I purchased a 2 tb wd green drive to make it 3tb.   i installed the drive and left my A drive in.  when i restarted i screwed up and formated the 2tb hard drive.    If I plug in it only shows the 2tb no 1tb and not seeming to self start .  solid light in the front.   can i undo what i did and start over?  any suggestion on how to fix so i can get the 1 and 2tb drive to become my 3tb backup?  THANKS!

GE

2

Is this the My Bool Studio II RAID drive? I don’t think you can just mix these drives.

Joe

3

it is a My Book Studio Edition 2-   the manual says to replace drive then wait for hours until it configures.   I formated the drive instead.  Wish I could get drive to original state then try again an see if that works.