Hello all,

So I got a 386DX/40 (I swear I have gone through more of these in the last few years than in the 90s) Elite mainboard, nothing fancy. Well actually it came with an ATI Graphics Solution 3 Hercules card that I have had no luck getting to work in another 386 in dual screen mode but that's for another thread (anyone got the driver disk for it?). Otherwise pretty standard fare.

It all works and I decided to add a CDROM (Soundcard header) and a ZIP drive (IDE slave). I plunked in a 270 Mb Prodrive LTS with DOS 6.22 preloaded and it boots just fine. Plug in the ZIP100 drive and they do not interfere with each other. GUEST.EXE finds the drive, assigns it a letter, and then when I go to D:\, I get Invalid drive or whatnot. Unplugging the drive and running GUEST.EXE says that there's no drives found. OK, I tried another ZIP100 - same. Booted with minimal, then no, drivers at all. Downgraded to DOS 6. Booted off a fresh DOS diskette. Same thing. I played around with GUEST.INI according to the help file, still nothing. LASTDRIVE=F, different jumper settings on the drives, etc.

Except when I put in a Windows 98 boot disk. I run GUEST.EXE (both in stock and modified INI) and it assigns it a letter, then when I go to D:\, I can see the contents of the ZIP drive. Reboot with DOS (5, 6, 6,21, 6.22) and we're back to D: being an invalid drive.

I mean worst case I'll make a custom boot disk that'll do the job and autoload it, presumably with the XCOPY command in tow, but yeah, that's so strange.

Ideas?