Add scsi disk?

[Dan Haines <dan haines metservice com>]

Hi all

I just added a "hot swappable" scsi disk to a server, but its not
showing up in cat /proc/partitions....  ive tried:  echo "scsi
add-single-device 0 0 4 0" > /proc/scsi/scsi (its correct details) but
it still doesnt get added... it gets added perfectly fine if i reboot..
how can i avoid the reboot?.. can i reload a module to do it?

Any help would be appreciated..

Cheers,
Dan