Thanks guys for all you replies.
No special software or drivers are loaded, config.sys is clean and so is auto.bat (I'll come back to that issue later) and no stacker software, used to use that myself ages ago
. Booting from a clean disk and using fdisk shows me 2 drives also.
So first I have to check my hard drive for jumpers and/or switches and the terminator resistor. Are those switches marked on the drive, or do I need to have a manual to find out, I don't know what brand/type drive it is, will remove it tommorow to check, and how does that terminator resistor looks like. I know it is easier for you to answer these questions when you know what drive is in there, I'll let you know asap.
auto.bat issue
PC-Dos 3.20 is installed in a \bin folder. In root there is a config.sys, in a \sys folder there is a file called auto.bat (not autoexec.bat). When moving auto.bat to root it wont load on reboot, when renaming it to autoexec.bat in root, it wont load. When renaming it to autoexec.bat in \sys folder, it wont load, so it only loads when it is placed in \sys as auto.bat. There is nothing in config.sys that redirects to \sys ot whatsoever. I know you can do such things with NDOS or 4DOS, but that is not installed. This is NOT normal behaviour for PC-Dos 3.20, is it??, anyone any idea why/how/what?
One more thing, got a second 5155 today, not as nice as the one I have now, but hey, it was cheap.
The second one has the original intel 8088 processor in it, my first one has a Nec V20 in it.
What do you guys think, keep the Nec V20, or replace it with the Intel 8088 for autenticity reasons.
Second one has a 10mb disc in it, (my first has a 20mb disc), I want to know when the 5155's are manufactured but cant find dates on them, I noticed both are 64k-256K motherboards, both hacked up to 640k, the second one has a soldered jumper on it, my firts one is missing the jumper.