So how do I truly upgrade Smartos on USB flash drive (thanscend, 16GB) from where SmartOS have booted if I can not find the device name and not showing on rmformat nor in diskinfo

I moved away from piadm, booting from HD to USB flash, to fulfill better SmartOS practices..

AHA.. I have put USB flash drive in what I suppose is USB 2.0 port on HP 800 G3 SFF and I now can see this Transcent USB flash drive in both diskinfo and rmformat. So USB 3.0 Intel implementation on illumos or something else seems to be a rpoblem when flash drive is in USB 3.0 port.