I have previously tested OPNsense using a DVD with 17.7 and everything loads up just fine.
I downloaded the image called OPNsense-18.1-OpenSSL-dvd-amd64.iso.bz2, verified sha256 checksum, decompressed using Linus Mint right-click context menu option, burned it to a DVD using the following command:
growisofs -Z /dev/dvdrw OPNsense-18.1-OpenSSL-dvd-amd64.iso
The same computer that loads up the 17.7 DVD just fine reports the 18.1 DVD as not being a system disk.
What am I missing?
Resolved. I was using the command incorrectly:
growisofs -Z /dev/dvdrw=OPNsense-18.1-OpenSSL-dvd-amd64.iso