dev xbd4 missing

[el kalin <kalin%el.net@localhost>]

hi all...  i have a netbsd instance running on aws (amazon) and need to attach another volume. i did that. in the dmesg it shows up as xbd4 but there is no xbd4*  in /dev. 

how do i add the xbd4* devices there so i can mount the volume?

thanks...