Reinstalling pfSense Plus Software

This guide uses the Netgate Installer to install pfSense® Plus software on a Netgate 4200 device.


pfSense® Plus is preinstalled on Netgate appliances. It is optimally tuned for Netgate hardware and contains features that cannot be found elsewhere, such as ZFS Boot Environments, OpenVPN DCO, Built-in IPFIX Export, and the AWS VPC Wizard.

Download Installation Media

The Netgate Installer can be downloaded from the Netgate Store using a Netgate Store Account.

See also

For a more detailed walkthrough of the download process, see Download Installation Media in the pfSense Software Documentation.

The image to download for this device is:


Prepare Installation Media

Next, write the installation image to a USB memstick.

See also

Locating the image and writing it to a USB memstick is covered in detail under Writing Flash Drives.

Connect to the Console

The installation process is interactive and utilizes the console. Follow the directions under Connect to the console to configure and use the console.

Boot the Installation Media

  1. Insert the memstick into the USB port on the right side and boot the device.

  2. Wait for the BIOS prompt to appear.

  3. Press Esc to enter the BIOS.

  4. Use the left/right arrow keys to select the “Save & Exit” header.

  5. Use the up/down arrow keys to move into the Boot Override section.

  6. Select the entry for the USB memstick

    The entry is likely at or near the bottom of the list. The name of the entry varies by brand/make/model of the USB memstick.

Determine Target Drive

During the installation process the installer will prompt to select a target drive. The installer will then write pfSense® Plus to the chosen drive.

  • On devices with only MMC storage, the only choice is da0.

  • On devices with multiple drives, such as MAX variants, take care to choose the correct intended target. The correct choice is always going to be the NVMe storage (nda0).

Install pfSense Plus Software

The installer will automatically launch and present several options. On Netgate appliances, choosing Enter for the default options will complete the installation process in most cases.


There are options on the Welcome screen of the installer which can recover configuration data from a previous installation or from a USB drive.

See also

For a complete walkthrough of the installation process, see Installation Walkthrough.

When the installation is complete, remove the USB drive from the USB port.


If the USB drive remains attached, the device may boot into the installer again.

See also

For information on restoring from a previously saved configuration, go to Backup and Restore.


If this device contains multiple disks, such as when adding an SSD to an existing system which previously used MMC, additional steps may be necessary to ensure the device boots from and uses the correct disk. Furthermore, having separate installations of the software on different disks is a known source of problems. For example, the kernel could boot from one disk while the root filesystem is loaded from another, or they could contain conflicting ZFS pools.

In some cases it is possible to adjust the BIOS boot order to prefer the new disk, but the best practice is to wipe the old disk to remove any chance of the previous installation causing boot issues or conflicts.

For information on how to wipe the old disk, see Multiple Disk Boot Issues.