Sorry for the inconvenience. Known Navigation header breakage, its being "rebuilt."
There may be other unforeseen breakage primarily in the handbook portion of the wiki.
The Table Of Contents section of each "PC-BSD® Users Handbook" page may be the best workaround.
Using growisofs/dvd+rw-tools in FreeBSD
If you are familiar with using the command line on a FreeBSD system, you can use dvd+rw-tools to burn the DVD using the following steps:
# Place the blank DVD into the drive # Install the port if it is missing: pkg_add -r dvd+rw-tools # Issue the burn command, replacing the cd number and ISO name to reflect yours: growisofs -Z /dev/cd0=PCBSD8.1-x86-DVD.iso # Eject the DVD once the burn is finished
You may need to have the ATAPI_CAM kernel option in your kernel to successfully do this if you are burning to a DVD drive that's connected via the ATAPI interface.