I just tried ExtFS on mac 10.9 or 10.11. In both cases prior installing the ExtFS mac showed uninitialized disk when I insert external USB disk with ext4 partition.. After installing the trial driver and rebooting when I insert this disk nothing happens. In the system preferences there is no ext4 partition. What could be wrong?
I also tried diskutil mount /dev/disk2s1, but that gives: Volume on disk2s1 failed to mount. Running mount_ufsd_ExtFS does not complain, but it seems nothing happens after that. This is both on macos 10.9 and 10.11. On MacBook Pro with macos 10.11 I have VirtualBox with Linux. That mounts disks with no problems. Any hints to investigate this farther?