Tested on High Sierra and Mojave   I've been looking off and on about how to enable trim support on a disk image in osx. Had a few more minutes today and found it on the Internet (https://serverfault.com/questions/876467/how-to-add-virtual-storage-as-ssd-in-kvm)     Issue: QEMU disks in osx are presented to the OS in a manner which interprets them as a rotational disk, as shown under About This Mac>System Report>SATA/SATA EXPRESS.       Ev