I recently installed Trisquel Mini Linux along with Windows XP, it worked quite fine but when I tried to boot Windows from the GRUB menu, I got a black screen promping me: Username and then Password. None of the usernames I have on Windows and Linux did work the same goes for the passwords, also the backspace doesn't work. If you have any ideas please post an answer. Thx in advance!
The user name is probably
root and the password is the Grub password. I am not familiar with Trisquel Mini Linux. If you are not aware of entering a dedicated Grub password then try the
Or boot Linux (which I assume you still can) and disable the password protection.
At least for some versions of that distro the solution seems to be the file
Comment out the lines or delete the file. Then run
update-grub2. The problem should be gone then.