Qubes not booting up past the disk encryption key

[ChrisA]

Sounds like a problem caused by auto starting sys-net.

Searching the forum for skip_autostart I find this example, for how to temporally disable auto starting:

Locked myself out after creating Sys-USB

Simply add kernel parameter, on grub menu press e to edit, then add qubes.skip_autostart in line that has rhgb quiet, in the same line if there’s rd.qubes.hide_all_usb delete that, then f10 to boot with this parameter.