[01:21] <arraybolt3[m]> guiverc: I used Etcher to flash the ISO, and it verifies the drive when it's done flashing, so I really doubt it was a USB issue. I was booting from a TeamGroup drive.
[01:22] <arraybolt3[m]> (Also, SHA256 hash was OK - my auto-downloader tools always verifies the sha256sum and even checks the GPG signature of the sha256sums file.)
[01:24] <guiverc> if written incorrectly it'll verify as valid (though invalid)... I don't know `etcher` so can't comment there, but some ISO writing software have re-format options (for persistence, change grub version etc) that need to know how to cope with the release ISO when not just cloning to media
[01:35] <arraybolt3[m]> guiverc: I think it just clones to media directly? Not entirely sure. It seems to.
[01:37] <guiverc[m]> I have no idea having never used it.  mkusb is my default (replacing `dd` though still `dd` if box doesn't have mkusb installed) and only use gnome-disks etc. if there are issues in booting media; to confirm documented procedures have the same issue..  I can't help sorry.
[01:39] <arraybolt3[m]> I've used mkusb before (I think the min version
[01:39] <arraybolt3[m]> so I'll try that and see how it works.