If I'd known you were such a master of HD resuscitation, leeb, I would have sent that 2064 that was having the problem. Sounds like you might have been able to get it up and running again, and of course you could keep it. I would have just been interested to find out what was on it. Oh well, it was consigned to the dustbin of history.
I'm surprised at how many entries are in the BIOS for the 3800 as far as HD's. Some sizable native entries are in the table. They must be Phoenix default entries that Tandy never bothered to remove since they never released a system with a drive anywhere near those sizes. I'll have to see if I can find any drives that match those larger entries and see if they work without DDO.
I'm honestly not even sure how it is working with my setting of table entry 24. According to the BIOS that is an invalid table entry, but it picks up and initializes the HD without any trouble. I'm 1/2 tempted to stick another HD in there without DDO and see if it might actually work using the same table entry. If it does, we may have found a way to get HD's to work without the need for a DDO.