Sorry for late reply.

> What controllers and drives ?

pciide2 at pci0 dev 20 function 0: CMD Technology PCI0649 (rev. 0x02)
pciide2: bus-master DMA support present
pciide2: primary channel configured to native-PCI mode
pciide2: using irq 5 for native-PCI interrupt

> >  ftp# disklabel /dev/wd6
> >  disklabel: ioctl DIOCGDINFO: Inappropriate ioctl for device
> >  
> >  only if I type 'disklabel /dev/wd6d'.
> >  
> >  Could someone please help me resolve it?
> 
> I geuss you have a file called /dev/wd6. What does ls -l /dev/wd6 say ?

Yes, you are right.
Maybe I make mistakes during 'sh MAKEDEV'.
Should I just remove them?

Thanks.