In article by Aharon Robbins: For most of the 4BSD releases, Kirk's CSRG 4-CD set unfortunately only has source files: no binaries, no boot records, no bootable tape images. This does make it hard to resurrect these systems on original hardware or simulators. Cheers, Warren

I have Kirk's 4-CD collection. Here's what it has for each version I mentioned: 4.0 binaries + sources (fully unpacked tree of installed system) no tape images, however there are already-built standalone program binaries in /usr/src/sys/stand, so it might be feasible to roll your own. the hardest part would be creating a root dump. 4.1 binaries + sources (fully unpacked tree of installed system) no tape images, but similar prebuilt stuff in /usr/src/sys/stand. 4.1a just some contents from a "Tape #2" - VERY incomplete. some games binaries, some games and command sources, and some documents. *no* kernel sources, regular binaries. 4.1b missing entirely 4.1c.1 just a tree of /usr/src, with a /usr/src/sys tree of unknown origin 4.1c.2 partial tape image: has mkfs program, and what looks like a root dump (but not 100% sure). the rest is untarred, but I'm guessing the remaining tape files were just in tar format anyway. prebuilt binaries for standalone programs. somewhat bizarrely, the kernel sources are in /a/sys and /sys (on the CDROM) is a broken symbolic link. this is obviously a snapshot of a working system rather than a more formal distribution. Anyway, as Warren already explained, the lack of distribution tape images makes it hard to install these in an emulator if you want to play with them!