Any reason for using an ancient optical drive instead of a memstick image? If that hardware can't boot from USB, you can also just hook up some sata SSD with the image or if there's no additional port available, you could use mfsBSD and dd it onto the disk that is supposed to be used in that system. (you'd need another system to prepare the disks for both variants)
Another ("hara kiri") variant would be to use the existing system to write the mfsBSD image onto its own disk. This nukes the systems partition table as well as any data residing on those first few (~300) MB. So only do this if you have backed up everything or you are fine with loosing all data on the disk! (I usually use this method to setup remote VPS/root servers that don't have a remote console or a rescue system and only offer preinstalled linux variants)
Mostly because I'm a "satisficer" rather than an "optimiser". For me, my computer is a tool rather than a hobby, so I try to settle on doing what works rather than wrestling with bleeding-edge tech.
And I think I know what's going on, now, tho not yet why: none of the
14.1R DVDs I've burned have been bootable, which is where the funny messages have been coming from.
I've used
ImgBurn exclusively ever since it first came out and making an ISO disc has always amounted to my downloading the
FreeBSD ISO image I wanted and using
ImgBurn's "write" function to copy it to the medium. I've burned any number of such ISO discs that way and until now none of them has failed. Now 6 tries have all failed, same problem: not bootable even though
ImgBurn claims they
are bootable.
To verify that the
earlier burns were bootable, I booted the
12.4R ISO disc and it came up fine.
So I have to wait til the maker of
ImgBurn comes online so I can discover whether
he knows what's happening.