TLDW:For visual reasons, I want the CD-ROM to be connected to the IDE connector from the Ultra66 controller. It will stay that way, but it will not be possible to boot from the CD-ROM. The controller sees the drive, but the WIN98 disk does not start.
Access to the cd-rom is only possible in Windows. Out of curiosity, I am looking for a solution that would allow the system to be installed from a disk in a drive that is connected to the controller. The only thing that comes to mind is to use the win98 start floppy, thanks to which I could start the installation from DOS. The problem is that although the controller recognizes the drive, in DOS there is a message "cd rom is not installed". I've read a lot of threads about this and it's probably not possible, but maybe someone has come across a similar problem. The only clue I've found that says it's possible comes from this thread, but it concerns the Promise TX2 controller. TX2, just like Ultra66, does not officially support CD-ROM.
Help with a PC Chips M519 board not recognizing the cd-rom.
The solution in this topic did not help. As far as I understand, DOS must have some driver that would allow it to recognize the drive. The MS-DOS mode launched from Windows works and the drive is visible. Maybe someone knows the solution to my problem.