If you still have administrative access to the device (via SSH or the Console port), this is the cleanest and fastest method.
Connect your console cable and open your terminal (9600 baud rate).
The system will ask for confirmation: Do you want to continue? (y/n) . Type . fortigate 30d factory reset full
Always remember to download a backup of your configuration ( config.conf ) before performing a reset if you plan on migrating settings to a new unit!
Hold it for approximately . You should see the status LEDs flash or cycle. Release the button and wait for the unit to reboot. Method 3: The "Maintainer" Account (For Lost Passwords) If you still have administrative access to the
For those who want to ensure the filesystem is completely wiped and the firmware is re-installed fresh, you can format the boot partition via the BIOS menu. Connect via Console cable.
Once logged in, immediately change the admin password or run the execute factoryreset command. Method 4: Formatting the Flash (The "Full" Reset) Hold it for approximately
Mastering the FortiGate 30D: A Complete Guide to a Full Factory Reset