Creating device /dev/sonycd with MAKEDEV

Hi,

I found out that the Redhat 4.0 Linux installation had a problem recognizing my CD. So I installed it from my hard drive. After that I tried to get my CD (Sony, type CDU33A) to work, but when I tried to mount my cd, I always get the
error: "....does not recognize cdu31a as a valid block device". Trying to fill in /etc/conf.modules with kernelcfg works (and my kernel is comiled modular), but I still had the same error. Then I checked the /dev/ directory for my device: size of sonycd (and cdu31a) defvices are 0. For the
moment I can access my CD via a line in rc.local:
  /sbin/modprobe cdu31a.o cdu31a_port=0x340 cdu31a_irq=0
and then mounting it (my mount point does exist).
But I want to try the clean way and remaking my device, so I want to use "MAKEDEV sonycd". But this comes bak with the error:
 'device: unknown major number for device cdu31a'
Is this an old version of MAKEDEV? Because I think MAKEDEV makes all devices when installing Linux, and some of those devices are of size 0, which is not very normal.