Due to the size of the base system of FreeBSD 12.0, the disc1.iso images for amd64 and i386 do
not fit onto a 700 MB CD-ROM. As of FreeBSD 12.0-RELEASE, however, disc1.iso for these
architectures can be written to a flash drive, or to a DVD.
Then.. what's the point of having a disc1 if you can...