WD hard disk should be returned

Hi there,

I backed up data on my colleague's WD eaternal hard disk from my Macbook Air for a temporary reason. Now, I need to give back to my colleague after erasing my data. But, its not showing up in another PC and it seems that its been configured to my macbook.

Kindly provide me a way so it's workable as a normal hard disk and accessible in other PC.

Thank you,

Kart.