Disk Management

[George Sirk]

I would like to know how to re-initialize an usb-external drive
from GPT to MBR
I got a message from Macrium to do this,

The disk is a 2TB Western Digital Passport.
I am trying to make it bootable and also to contain an image of my system.

I got as far as disk management but do not know what to do.
(so far could not find helpful information)
If there are step by step instructions I would like to have them.
Thanks
George

 

[Norton]

George Step by step instructions for converting from GPT to MBR.
{The link has been scanned with Malwarebytes Premium}
https://neosmart.net/wiki/convert-gpt-to-mbr/#Difference_between_GPT_and_MBR