"Open Access 4" on dosemu

Hello,

I need to transfer a MS-DOS program "open access 4" [OA4] from my wife's dying w98 to a modern linux box.

I installed dosemu (and congrat for the awsome work !) and all works fine except that OA4 seems to consider my volume full and refuse to write anything on C:/

Mandrake 10.0
dosemu 1.2.0 (from rpm)

I have rsynced the w98 OA4 folder (program and data) on the linux box (/home/mcf/PROG and /home/mcf/DATA)

I symlinked the 2 usefull folders from /home/mcf (PROG and DATA) to ~/dosemu/freedos so i have the 2 folders on C:/

Running dosemu from a console in 80*25 is fine and i can run OA4.EXE without any problem.
I can browse all my existing data. No problem (again it's amazing to have this working. thanks to all the dev).

When I want to create/modify anything on OA4 i get an error message "volume X is full".

To be sure I've "chmod -R a+rw" the /home/mcf folder so any iser can RW.

I found nothing on google and your list.
Any idea, pointer, how-to or experience from OA4 user would be great. Thanks in advance.

When it works i'll make a small how-to in case there is some OA4 users around ;-)

D.