Quote from https://www.qubes-os.org/doc/usb/
> Caution: By assigning a USB controller to a USB qube, it will no longer be available to dom0. This can make your system unusable if, for example, you have only one USB controller, and you are running Qubes off of a USB drive. How can one recover from such a situation if there is no PS2 keyboard/mice available? I guess... Unless there is a better way...? Boot the system using from an external disk using a USB recovery operating system... Then modify the local disk (with broken Qubes)... Then do what? Cheers, Patrick -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/60e93375-e4dc-78ce-80e5-2414c263874b%40riseup.net. For more options, visit https://groups.google.com/d/optout.