Second My Passport on iMac

WD External Drives External Drives for Mac
1

I have a My Passport attached to an iMac used for Time Machine backups.

I have purchased a 4 TB My Passport. When I connect to the iMac, Time Machine wants to set it up. I want the existing 2TB device to be the Time Machine back.

Help!

2

Hi wardfamily,

Please elaborate your concern so that we will try to help you.