Converting "My Book" Back-up to just an external drive

My “My Book” starts with WDBBGB. It’s max’d out so I purchased an appropriately sized replacement for back-up. Now I want to use it as an additional external drive. Can I? If so, how do I convert it?

Hi,

The WD My Book is a Plug and Play external storage device and can be used effectively with your computer without need of any software.

https://support-en.wd.com/app/answers/detail/a_id/10132