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nextboot (8)
  • >> nextboot (8) ( FreeBSD man: Команды системного администрирования )

  • BSD mandoc
     

    NAME

    
    
    nextboot
    
     - specify an alternate kernel and boot flags for the next reboot
    
     
    

    SYNOPSIS

    [-f ] [-o options ] -k kernel
    -D  

    DESCRIPTION

    The utility allows specifying an alternate kernel and/or boot flags for the next time the machine is booted. Once the loader(8) loads in the new kernel information, it is deleted so in case the new kernel hangs the machine, once it is rebooted, the machine will automatically revert to its previous configuration.

    The options are as follows:

    -D
    Invoking with this option removes an existing configuration.
    -f
    This option disables the sanity checking which checks if the kernel really exists before writing the configuration.
    -k kernel
    This option specifies a kernel directory relative to /boot to load the kernel and any modules from.
    -o options
    This option allows the passing of kernel flags for the next boot.

     

    FILES

    /boot/nextboot.conf
    The configuration file that the configuration is written into.

     

    EXAMPLES

    To boot the GENERIC kernel with the command:

    "nextboot -k GENERIC"

    To enable into single user mode with the normal kernel:

    "nextboot -o ""-s"" -k kernel"

    To remove an existing nextboot configuration:

    "nextboot -D"
     

    SEE ALSO

    boot(8), loader(8)  

    HISTORY

    The original manual page first appeared in Fx 2.2 . It used a very different interface to achieve similar results.

    The current incarnation of appeared in Fx 5.0 .  

    AUTHORS

    This manual page was written by An Gordon Tetlow Aq gordon@FreeBSD.org .  

    BUGS

    The code is implemented in the loader(8). It is not the most throughly tested code. It is also my first attempt to write in Forth.

    Finally, it does some evil things like writing to the file system before it has been checked. If it scrambles your file system, do not blame me.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    FILES
    EXAMPLES
    SEE ALSO
    HISTORY
    AUTHORS
    BUGS


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