HP DOS O/S help?

I have an HP diagnostics pack on 7900 media that I would like to put on 1/2 bootable mag tape. According to the manuals on the diganostic configurator, going from 7900 to 7970 media isn't directly supported by the configurator diag initialization routine. It does say that the way to do it is to boot up DOS or RTE and copy the binary images from disk to tape. I know nothing about DOS or RTE. From what I can tell DOS should be much easier to set up quickly and require less knowledge/learning than RTE. I have no desire to learn DOS or RTE, I just want to get something up quickly and temporarily that will let me copy the diag suite from 7900 pack to 7970 mag tape. Does anyone here know how to install DOS on a 2100/7900/7906 system and what commands to use to copy the diag absolute binary images from disk to tape? I'd appreciate the quick "cheat sheet" version. Thanks! Jay West --- [This E-mail scanned for viruses by Declude Virus]