I'm trying to revive a N* Horizon, and as I've found out, you have to have a booting machine to make boot disks. In order to have a booting machine, you either need a boot disk or a ROM board. My processor board doesn't have a ROM option, so I'm out of luck. I have supposedly 4 boot disks, but none of these seem to get the computer booting, though I hear the drive head move back and forth as it seems to read the disk. I still don't get any output into the right serial port. Does anyone have access to a bootable Horizon? I have a few hard sector floppies, so if I could get a boot disk copied, that'd be great. Optimally, I'd like to try to read these disks on a known working machine before having to overwrite any. Two aren't labeled, so they may very well be blank. All of the others have labels indicating some possibly neat programs, like Microstat, WordStar, and Mailing List Utility. About half of the disks are labeled Care. Care System, Care Data, Care Source Code, and so on. Any idea what the Care System could be? Another one is from Validata Computer and Research Corporation, which apparently is still alive an well in Montgomery, AL. It's entitled "5 Meg Hard Disk Start Up Diskette for Worcs, PM, Care Systems". No telling, eh? My system has a CompuPro 24k SRAM card (with only 20k populated), a N* RAM16-A3 16k RAM card (fully populated), a N* ZPB-A2 processor card (no ROM option) and a N* MDS-AD3 double density floppy controller, all on a N* HRZ-MB-3 motherboard. From the double density FC, I would indeed need a DD boot disk. Judging from the date codes, I would date this particular machine to 1979. Thanks, Kyle