What do I do if I am missing device files (/dev/*) ?


The kernel configuration directory, /etc/conf, contains the subdirectory
node.d.  This subdirectory contains files with information that idmknod(1M)
uses to create needed device nodes.

Most the files contain the headings:

#Driver    Name    Type    Minor   Own     Grp     Mode    levels

If you install new hardware or connect more terminals to serial ports and
need to create those device nodes, you must edit the appropriate file,
uncomment the lines for the devices you require, run idmknod as follows:

# /etc/conf/bin/idmknod -M <device module name>

rebuild the kernel with idbuild(1M) and reboot the system.  For example, say
you wanted to connect a terminal to the two serial ports on the back of the
machine.  The file /etc/conf/node.d/cons is as shown below:
#driver name    Type    Minor   Own     Grp   Mode    levels
#
cons    tty0    c       0       0       7     622       2
cons    tty00   c       0       0       7     622       2
cons    contty  c       0       0       7     622       2
cons    COM1    c       0       0       7     622       2

cons    tty1    c       1       0       7     622       2
cons    tty01   c       1       0       7     622       2
cons    remote  c       1       0       7     622       2
cons    COM2    c       1       0       7     622       2

#cons   tty2    c       2       0       7     622       2
#cons   tty02   c       2       0       7     622       2
#cons   COM3    c       2       0       7     622       2

#cons   tty3    c       3       0       7     622       2
#cons   tty03   c       3       0       7     622       2
#cons   COM4    c       3       0       7     622       2

You would edit cons and uncomment the lines for tty2 and tty3, run idmknod
as shown above, replacing <device module name> with "cons" (no quotes),
rebuild the system (idbuild -B) and reboot.  When the system comes up, you
will see the files /dev/tty2 and /dev/tty3.