Nano Memory card does not show up in Finder nor Disk Utility
I have a Nano Memory card working fine. I know it's fine because it contains a bootable ubuntu OS that is being used in a Raspberry Pi.
When I plug it to my Macbook Pro (Mojave 10.14.5) it does not show up in Finder nor even in Disk Utility.
Solution 1:
Working as designed. macOS doesn't support the linux filesystems that linux uses to boot. The one I use for booting is ext4.
check what filesystem you formatted flash driver with.
For ext4, you can install one of these drivers.
http://osxdaily.com/2014/03/20/mount-ext-linux-file-system-mac/
https://www.paragon-software.com/us/home/extfs-mac/#