On 07/05/2017 10:31 AM,
[email protected] wrote:
> ---THE PROBLEM:
> Today I correctly installed sys-usb (the qube to handle USBs), what I
> did not know is that rebooting just after the installation caused the
> system to deatched every usb from the system, including keyboard (and
> also mouse I guess). As a result I can't type my passphrase in at the
> computer boot.
> 
> ---WHAT I HAVE ALREADY TRIED:
> Following the guide at 
> https://www.reddit.com/r/Qubes/comments/68ofiq/usb_qubing_not_surprisingly_seems_to_have_locked/
> I first went to rescue mode using the qubes installation usb, and then I
> deleted the sys-usb folder at /var/lib/qubes/servicevms/, and after that
> I tried to modify the grub file at /etc/default/grub, BUT UNFORTUNATELY
> THAT "GRUB" file Is not there in the rescue mode!!! and not even if I
> boot ubuntu in another usb and access my HDD. SEEMS LIKE IT IS ONLY
> ACCESSIBLE FROM the dom0 os itself!
> 
> ---WHAT I THINK I NEED TO DO IN ORDER TO FIX THE PROBLEM
> I THINK I NEED TO FIND A WAY TO MODIFY THE GRUB file and change it as
> described at https://www.qubes-os.org/doc/usb/#removing-a-usb-qube BUT
> HOW CAN I DO THAT IF I CAN'T BOOT MY SYSTEM AND ACCESS IT ? AND NEITHER
> ACCESS IT FROM THE RESCUE MODE?
> 
> 
> HELP PLEASE I'M SO FRUSTRATED AND STRESSED because of this little problem.
> 
> 
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Try removing the 'rd.qubes.hide_all_usb' entry from dom0's
/boot/efi/EFI/qubes/xen.cfg.

You can do this from a liveUSB or another OS if you do not have the
ability to edit it from within Qubes.

Credit to mnords on IRC for the solution.

Andrew Morgan

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