Irb6400 baseware 2.1 booting problem

Hi guys,
I m trying to load baseware 2.1 in robot irb6400. When I insert disk 1 it just stuck there on a very first file which can be seen on teachpendant. I have changed its main processor board and other cards as well but still cannot load the program in the robot. I have done it before and program worked fine but not it cannot be loaded into the robot. I also have changed the floppy rom but still same behaviour.
Any suggestions regarding the matter.
I m trying to load baseware 2.1 in robot irb6400. When I insert disk 1 it just stuck there on a very first file which can be seen on teachpendant. I have changed its main processor board and other cards as well but still cannot load the program in the robot. I have done it before and program worked fine but not it cannot be loaded into the robot. I also have changed the floppy rom but still same behaviour.
Any suggestions regarding the matter.
Comments
It should be a problem at floppy driver also. If you are %100 sure floppy image is OK you can replace old floppy driver with floppy/USB converter.
https://library.e.abb.com/public/301a3d11a53352e0c1257c1a00670564/3HAC038751-en.pdf
BR.
Erdem.