I have used and created an image drive to install Ubuntu server 18.04.
I have tried to erase and reformat using Mac utility but It will not do it.
Can someone explain how to do this in a terminal or other software
Thanks
21 Answer
I tried other ask ubuntu answers but they did not work for me. I found an answer at this link which worked for me.
at the terminal type
Diskutil List
identify your disk to be erased then type:
diskutil eraseDisk free EMPTY /dev/disk4
Then format the disk
diskutil eraseDisk ExFAT USB64 /dev/disk4 where USB4 is the disk name and EXFAT the format
