Comment 31 for bug 768791

not showing .iso is unrelated to "isoinfo: Unable to find Joliet SVD"

Joliet SVD is a CDROM specification as listed here:: http://littlesvr.ca/isomaster/resources/JolietSpecification.html

 psyche-i386-disc5.iso is a CDROM image found from redhat 8 here::

http://ftp.scientificlinux.org/linux/redhat/8/iso/
$ isoinfo -i psyche-i386-disc5.iso -J
$
NO error and NOT visible to usb-creator

https://releases.ubuntu.com/focal/ubuntu-20.04.6-desktop-amd64.iso
$isoinfo -i ubuntu-20.04.6-desktop-amd64.iso -J
$
NO error and visible to usb-creator

Ubuntu 18.04.6 LTS
usb-creator-gtk --version
0.3.3

 "ubuntu-20.04.6-desktop-amd64.iso" is visible to usb-creator menu automatically.

I can confirm that renaming the hidden .iso to .img causes it to show in usb-creator-gtk automatically at program start.