I used the USB3 port with 9.2 all the time (even on UI update to 9.3). Grub (and the need to set a loader variable on fresh installation) is new with 9.3.
You missed my point. But okay, keep telling yourself that. USB3 speeds NEVER worked with FreeNAS properly. They were disabled by default in 9.2. 9.3 has brought alot to the table, along with some newer USB drivers. Note that those may or may not have broken your ability to boot from USB3 without adding the variable, but you are linking the loader variable to 9.3 and that is 100% incorrect from a technical standpoint.
You might be able to argue that you are forced to use the loader variable on 9.3, on your hardware, where you didn't have to with 9.2. I won't argue that. But claiming the loader variable is "new" is totally incorrect. If you read my link from the 9.2 manual you'd know you are in error. ;)
In fact, if you read https://bugs.freenas.org/issues/3273 you'll find that *I* am the one that is responsible for disabling USB3 by default in FreeNAS.. back in Nov 2013. So yeah, I've been here for the whole thing as I was the one that supported this action, more than a year ago.
Just for the record, I'm not trying to argue "I'm right and you are wrong". I'm trying to correct you so you don't continue to spread this mis-information. Saves me having to explain it to others later and makes you look smarter when you can drop the story of what happened in the future if you so desire to discuss it in the forum.
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