On Mon, Jun 7, 2010 at 21:51, Martin Gregorie <martin@xxxxxxxxxxxx> wrote: > Does OS X keep a static list of device files, as Linux used to do in > its pre UDEV days or do device files get built on the fly as they are > needed? Looks like automatically: http://developer.apple.com/mac/library/documentation/Darwin/Conceptual/KernelProgramming/boundaries/boundaries.html#//apple_ref/doc/uid/TP30000905-CH217-BABGJBFJ