Something like this? Handbook: 31.8.1. Setting Up the PXE Environment
bsdinstall when the system boots up, but I'd like to know if that would work.There was an article once covering the installation of a "Jumpstart" server. But the article seems to have disappeared. It was old but the principles should remain largely the same. I haven't tried it myself but you could try copying the entire tree of a memory stick image into the exported directory and set it up in a similar way to the diskless client PXE boot.That section covers running FreeBSD from a server rather than installing it...
There was an article once covering the installation of a "Jumpstart" server. But the article seems to have disappeared. It was old but the principles should remain largely the same. I haven't tried it myself but you could try copying the entire tree of a memory stick image into the exported directory and set it up in a similar way to the diskless client PXE boot.