(grub.info.gz) Serial terminal

 
 7 Using GRUB via a serial line
 ******************************
 
 This chapter describes how to use the serial terminal support in GRUB.
 
    If you have many computers or computers with no display/keyboard, it
 could be very useful to control the computers through serial
 communications. To connect one computer with another via a serial line,
 you need to prepare a null-modem (cross) serial cable, and you may need
 to have multiport serial boards, if your computer doesn't have extra
 serial ports. In addition, a terminal emulator is also required, such as
 minicom. Refer to a manual of your operating system, for more
 information.
 
    As for GRUB, the instruction to set up a serial terminal is quite
 simple. First of all, make sure that you haven't specified the option
 `--disable-serial' to the configure script when you built your GRUB
 images. If you get them in binary form, probably they have serial
 terminal support already.
 
    Then, initialize your serial terminal after GRUB starts up. Here is
 an example:
 
      grub> serial --unit=0 --speed=9600
      grub> terminal serial
 
    The command `serial' initializes the serial unit 0 with the speed
 9600bps. The serial unit 0 is usually called `COM1', so, if you want to
 use COM2, you must specify `--unit=1' instead. This command accepts
 many other options, so please refer to  serial, for more details.
 
    The command `terminal' ( terminal) chooses which type of
 terminal you want to use. In the case above, the terminal will be a
 serial terminal, but you can also pass `console' to the command, as
 `terminal serial console'. In this case, a terminal in which you press
 any key will be selected as a GRUB terminal.
 
    However, note that GRUB assumes that your terminal emulator is
 compatible with VT100 by default. This is true for most terminal
 emulators nowadays, but you should pass the option `--dumb' to the
 command if your terminal emulator is not VT100-compatible or implements
 few VT100 escape sequences. If you specify this option then GRUB
 provides you with an alternative menu interface, because the normal
 menu requires several fancy features of your terminal.
Info Catalog
(grub.info.gz) Network
(grub.info.gz) Top
(grub.info.gz) Preset Menu
automatically generated by info2html