No SCHEME/GUID option even when switching to “View all Devices”
[MacBook Air 13-inch, 2017]
I’m trying to partition a TOSHIBA 1TB USB 3.0 Hard Drive (Canvio Basics).
1) Following reliable online instructions, I used Disk Utility>Erase> chose to ReName disk> then ERASE
Result: “Partition” is...