Re: booting with no video adapter

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On 9/6/06, Tod Merley <todbot88@xxxxxxxxx> wrote:
On 9/6/06, T. Horsnell <tsh@xxxxxxxxxxxxxxxxx> wrote:
> >On Wed, 2006-09-06 at 18:23 +0100, T. Horsnell wrote:
> >> How can I get an FC5 system to boot without a video adapter?
> >> At the moment, I cant even figure out how to tell grub that
> >> it has no VGA, let alone Linux. Any ideas anyone?
> >>
> >> Cheers,
> >> Terry
> >>
> >
> >Why does it matter? I usually setup headless machines using a serial
> >null cable: (AKA Serial console)
> >All you need to do is configure grub [1] (and BIOS?), add serial console
>
> But this is what I cant figure out how to do. How to configure
> grub so that it doesnt try to use video?
>
> Terry.
>
>
> >support to the kernel command line [2] and add a serial console to
> >inittab [3].
> >
> >- Gilboa
> >
> >[1]
> >http://www.tldp.org/HOWTO/Remote-Serial-Console-HOWTO/configure-boot-loader-grub.html
> >[2]
> >http://www.tldp.org/HOWTO/Remote-Serial-Console-HOWTO/configure-kernel-grub.html
> >[3]
> >http://www.tldp.org/HOWTO/Remote-Serial-Console-HOWTO/getty-agetty.html
> >
> >
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> >
>
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Hi Terry!

At the GRUB command the "serial" command:

# From the GRUB manual:
-----------------------------------------
13.2.12 serial
serial ['--unit=unit'] ['--port=port'] ['--speed=speed'] [Command]
          ['--word=word'] ['--parity=parity'] ['--stop=stop'] ['--device=dev']
     Initialize a serial device. unit is a number in the range 0-3
specifying which serial
     port to use; default is 0, which corresponds to the port often
called COM1. port          is the I/O port where the UART is to be
found; if specified it takes precedence over
     unit. speed is the transmission speed; default is 9600. word and
stop are the number  of data bits and stop bits. Data bits must be in
the range 5-8 and stop bits must be   1 or 2. Default is 8 data bits
and one stop bit. parity is one of 'no', 'odd', 'even'   and defaults
to 'no'. The option '--device' can only be used in the grub shell and
is   used to specify the tty device to be used in the host operating
system (see Chapter 15   [Invoking the grub shell], page 55).
     The serial port is not used as a communication channel unless the
terminal command   is used (see Section 13.2.14 [terminal], page 41).
     This command is only available if GRUB is compiled with serial
support. See also
     Chapter 7 [Serial terminal], page 23.
-----------------------------------------------------------------------
# The GRUB manual is available at:
http://www.gnu.org/software/grub/manual

# Referenced previously but still a good resource
http://www.tldp.org/HOWTO/Remote-Serial-Console-HOWTO/configure-boot-loader-grub.html

Have Fun!

Tod


Also check your BIOS setting to ensure that it allows booting without
a video card.

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