> The easiest should be to start in "recuperation mode" (the second > line for Trisquel in GRUB, the bootloader). This provides you a root > shell what means you can do whatever you want (including destroying > your system).
In fact, Trisquel comes with that entry disabled to improve security. If you want -and most important, know how- you can still enter in grub edit mode and add the "single" parameter to boot in root mode. Since that is also a security threat, since Trisquel 4.0 the edit mode requires a password, which is random for every installation and lives in /target/etc/grub.d/01_PASSWORD and only root can read it. So, it is wise that the system administrator read that password and note it down in case something goes wrong.
