If you insert a PC Card ATA device and it isn't recognized (no special files are created), use the prtconf command to try to identify the problem.
Run the prtconf -D command to see if your pcata card is recognized.
A recognized device will appear at the end of the prtconf output. For example:
# prtconf -D . . . pcic, instance #0 (driver name: pcic) . . . disk, instance #0
If pcata does not appear in the prtconf output, there is a problem with the PC Card adapter configuration or with the hardware.
Check to see whether the problem is with the card or the adapter by trying to use the card on another machine and by seeing if it works on the same machine using DOS.