I’m hoping someone can help me. I am trying to clone my Imac drive to an SSD but I get the messsage: EPERM: operation not permitted, open ‘/dev/rdisk0’
I have added the balenaEtcher to my “allow apps to control your computer” but I still get the message. I am running OS High Sierra 10.13.6
I am using an OWC SSD Mercury Extreme Pro 6G and I have played hell trying to get this drive to format. I think I’ve done it, but it shows an ! after the drive in balenaEtcher. Thoughts?? TIA