I’m trying to format a partioned SSD disk utility (v17, on High Sierra). The drive was previously formatted successfully on an El Capitan machine.
DU can see the two partitions, but when I select one and try to erase it, DU just sits. No error message and I have to force quit. I’ve tried both Mac OS Extended and APFS.
If I move the drive back to my El Capitan machine, I’m able to erase and format.