Why does my Ps4 not recognize the USB storage drive?

Moin everyone!

I wanted to download a few more games on my Ps4 and dug a USB memory drive out of my closet. I plugged it in, but unfortunately the Ps4 doesn't recognize my disk. Could someone explain why that is? (I have a Siemens storage disk)

Does the record click rhythmically?

Maybe it needs to be formatted to the PS4 file system.

So I can't hear clacking noises now, but maybe it really has to be formatted. How does this work?

Take a look at this (English)