Formatting issues with USB Drives and a work around on a Mac

This is a quick video to help you with a work around if you encounter the dreaded ! mark in red when you try and format a USB pen stick. Here we see two different operating systems running the two different versions of disk utilities feature for this task. First we will see the option on macOS Sierra then we go to Yosemite to finish of who to resolve the issue with a USB drive not erasing or formatting correctly in disk utilities on a mac.