Only SCSI host and ethernet device modules need to be added to the kernel configuration. Most of these devices benefit from command-line arguments, and using kernelcfg is a good way to keep things consistent and reduce the amount of searching the driver has to do to find your particular hardware.
Booting from a SCSI device
If your system is booting from a SCSI device, the Linux kernel must load the SCSI device driver module before kerneld is even running. This is achieved by using an initial ramdisk, from which the driver is loaded. By convention, this SCSI adapter is still configured for kerneld, but in reality it has no effect because the driver is vital to system operation.
Log on as root and start ...