`Open With Disk Image Mounter` a `.iso` requiring a password takes a few seconds to show the `Authentication Required` window
Someone trying desperately many things may not understand the link and it is even unclear if the instruction was taken into account and still being proceeded.
I have in mind an Ubuntu full disk encrypted iso:
-----BEGIN PGP MESSAGE-----
hF4DTQa9Wom5MBgSAQdAG1bLD9JiMA98YNTixZgpmI930iyV7L8hYHEI4wHJVwww
QmG8GrSj4w5O+qfdXayc//lJJ8BnkfDeHxdRSee/VevFm/g59vz+b0ApTrvF8PaU
0k0BFfeMjxIHqiSClhAd4LvyRWTlaw3HJSTbIcKHdDNSJh2BOcWzEfNkLxEOo/kc
3TaMehkGAOW1GHo0Te0MUD9dnGFbjpr0jRJV6WN+TQ==
=glsp
-----END PGP MESSAGE-----