HELP - iMac out of internal disk space. Have a 4TB MyBook, 4TB MyCloud and 4 TB MyCloud Duo

HELP!

I was hoping to use the MyCloud Duo as a file space where I could create and store new photos. It appears that the Duo is strictly a backup device for the internal drive on my iMac.

So, I reformatted the MyBook and connected it to the iMac as an external drive. I moved the gazillion photos to the external drive. My thinking was that I could use the Duo to back up the internal and external drives. It appears that my scheme did not work.

Have I done something wrong?

Hi GEMason,

You can follow the steps mentioned in below articles which will assist you to backup PC and import USB external drive contents on My Cloud Home: