Hi.

For a current retro build based on a SBC (DSM M.1526 with 486) on an ISA backplane i'd like to install WinNT on it.
When loading the setup from the floppies the screen splits blue/black when loading the FAT-filesystem and it freezes.

This is the same on NT 3.51 and NT 4.0

I have a NT 3.51 installation on a SCSI disk which i tried to boot in this machine using a suitable controller with which the system was installed, so the drivers are in there.
When trying to boot this one it crashes when trying to load fastfat drivers or something.

I thought this is an issue with the graphics card, but i tried three different but the problem is always the same with the blue/black split screen, so i guess it's not a problem with the GPU.

What could the cause be and how to resolve this?