Hi,

On Mon, Dec 24, 2007 at 05:20:10PM +0800, ramkumarj Ramkumar wrote:

I would be very grateful if the following questions could be addressed,

1. Does the inittab format changed for Linux 2.6. The old one was from
mkrootfs (which I think is pretty old). I could see some changes in the
"respawn" line.

Inittab isn't tied to the kernel, but to the init process. So no, it
should not have changed between 2.4 and 2.6.

2. Is it required to run the tty0 along with ttyS0. Is this is mandatory. I
assumed all these days console and ttyS0 should be sufficient.

tty0 is normally one of the vga consoles. It shouldn't be needed if all
you have is serial.

3. A very basic question : What is the clear difference between ttyS0 ( UART
Driver ), console and tty0. To my understanding, ttyS0 is the first port
UART 's driver (for 16550/8250) which deals with the hardware as such by
writing and reading the registers. tty0 is virtual console, something to do
with telnet sessions. But I dont clearly understand why console and tty0 are
both required or not. Please correct me if my understanding is wrong.

ttyS<x> are normally 8250-compatible uarts, yes. pts/<x> is remote
connections such as telnet or ssh-based ones. tty<x> are normally the
local vga consoles.


-Olof