Hi mauro
I do not use Avxcat myself but would expect some sort of "exclude drive(s)" setting within the app to avoid the problem or, possibly, an entry in an ini file that could be changed...
Floppy drive D: is possibly a USB Floppy - if I am right you can get rid of this, if not needed, by changing the config.sys entry to
BASEDEV=USBMSD.ADD /REMOVABLES:8 /FLOPPIES:0
You could also REM cd related drivers in the config.sys to "lose" drive F:
@ivan
Drive order looks OK to me - fixed drives above removable drives
Regards
Pete