I've created and edited a sdcontrol file this way:
rebooted the Collie, sopped it before enterd Opie, logged as root. Then:
mount -n -o remount,rw /
cp /etc/sdcontrol /etc/sdcontrol2
then I've edited (with Vi) the new file this way:
DEVICE=/dev/mmcda1 -> DEVICE=/dev/mmcda2
MOUNT_POINT=/mnt/card -> MOUNT_POINT=/mnt/card1
SMB_MOUNT=/home/samba/SD_Card -> SMB_MOUNT=/home/samba/SD_Card1
But it doesn't work either. I suppose then OZ 3.5.3 is a requirement to get this to work. Thanks for all your help and assistance!