An effective signature means brand new seemed document are obviously finalized by the holder of the keyfile mentioned (whenever they failed to matches, the trademark will be reported as Crappy). The newest warning message is simply there to inform you one you have not countersigned an important therefore isn’t in your selection of leading provide. If you would like know more about signing points and you can faith, you can travel https://sugar-daddies.net/sugar-daddies-usa/tx/austin/ to the fresh Ubuntu area GPG wiki page.
Given that we have verified the latest checksum file was made because of the Ubuntu, we can make sure that the brand new ISO document we installed fits the checksum. Continue reading Ensure that the installed the newest SHA256SUMS and SHA256SUMS