External Drive Newbie question

Hi,

I have a Mac running MacOS High Sierra. I bought a Seagate 1T external drives to store some of my videos to send to my grandmother as a Christmas gift. She has a Chrome Book which runs on Windows.

The first thing I have to do is is configure the drive. It is already set for windows. I am assuming I have to configure it to the Mac in order to be able to move my videos from the computer to the drive. Is this correct? If this is correct then when I send her the drive will she be able to view the videos since it was configured for a Mac?

How do i handle this so Grammie can view videos on her chrome book?

Thanks

Contact Seagate support … this is a Western Digital forum.