It looks like the problem is with unpacking .../firefox-locale-en as the history and term logs show.
Ran another test this time with no Internet and minimum install and no errors were encountered. Ran yet another test with Internet connection and no downloading and again the problem with Firefox. As far as I could determine what happens is that the installer fails to connect/contact the snap store and waits/retries 3 times for 10 minutes (toatl 30) and then the crash occurs as in my initial report. This results in no boot device available after the incomplete install. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1965805 Title: Ubiquity failure - Error while installing packages Ubuntu Jammy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1965805/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs