Fix lỗi bootloop

• Boot pfSense into single user mode -> in most cases option 2
• Press Enter when prompted for a shell
• Enter fsck -fy / (-f force checking even if filesystem is marked clean, -y assume yes to all questions)
• Repeat the command at least five times, or until no errors are found nor fixed, even if the filesystem is reported clean.
• After that finally reboot by enter the same-titled reboot command.