TRS-80 Model 4 help requested

From: "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> Yes, they did. I don't remember for sure, but I think that on a Model I, you could only use 3 drives if you decided to use Double Sided Drives. On a Model III/4, it didn't matter as you could use two internal and two external double sided drives without problems (I think...). It's been a while, and my memory is fuzzy on this one. I used to use one DS/DD 40tk as Drive 0:, and two DS/DD 80tk drives as 1 and 2 on my Model I when it ran my BBS. I had an LNDoubler in it, and always meant to get 8" drives to get 1.2mb each instead of 720k. I never did do that. Now, I could put 1.2mb drives on with that, I guess. You could boot from any size media that the controller would support, you'd just have to make a boot floppy on the correct media, as the drive settings were contained in the boot sector of the disk. On a Model I, the boot sector ALWAYS had to be Single Density, no matter what the rest of the disk was. That was the main difference between the Model I and III. While they both had DD capability (the Model I equipped with a Doubler), the Model III required a Double Density Boot Sector. I think that one of Dos'es (MultiDOS I think) would boot on both machines as long as the Boot sector was the correct type. I know one of the Dos'es could do that. I REALLY have to find my dream machine... A complete LNW Model I or Model II (Team) computer... Regards, Al Hartman