Identifying and Configuring Your Modem
If your modem is not automatically on COM1, 2, 3, or 4, you may need to perform some additional
configuration steps before it can be used for PPP connections. Plug-and-play and PCI modems are
often found on higher ports such as ttyS4 ("COM5"). This information can often be found in the output
from the dmesg utility. If you reached this point from stage 2 of the install, you can get to a
prompt by pressing Alt+F2 and logging in as root.
# dmesg | grep tty
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS04 at port 0xa800 (irq = 5) is a 16550A
In this case, ttyS00 is the on-board serial port (most PC motherboards have at least one of these)
and ttyS04 is probably the modem. If you have several serial ports showing up, you can create
devices for all of them (as shown following) and try them until you find your modem.
The system includes only ttyS0 through ttyS3 by default, so this device will need to be created
using the MAKEDEV command. When running MAKEDEV, you will need to leave out any leading zeros
in the device number. In this example, ttyS04 becomes ttyS4:
# (cd /dev && sh MAKEDEV ttyS4)
If you reached this point while performing stage 2 of the install, you can get back to the install menu
by pressing Alt+F1.
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