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how to modify run level in zed board

Former Member

hi,

can you give the suggestion how to modify the run level in zed board. i tried to modify the run level in /etc/inittab file id:1:initdefault instead of id:5:initdefault: .but it is not changed. so anyone have an idea regarding this issue. please suggest me and how to remove the login id and password after booting the zed board.



Thanks & Regards,
srinivas Rao

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  • 0

    Hi Srinivas,

    Are you using a RAM disk image?  If so are you modifying /etc/inittab within the image itself or from the filesystem that is loaded into RAM at runtime?

    One of the most overlooked kernel boot parameters is the runlevel.  I tried this on my ZedBoard using the Xilinx 2014.2 linux release:

    http://www.wiki.xilinx.com/Zynq+2014.2+Release

    I took the devicetree.dtb provided for ZedBoard and used dtc to convert it back to device tree source format.  I then edited the kernel bootargs line to append the runlevel to the end (the default is 5 if the runtime is not specified at boot time) like this:

    bootargs = "console=ttyPS0,115200 root=/dev/ram rw earlyprintk 1";

    That 1 in bootargs will tell the kernel to override the default runlevel go to runlevel 1.

    Then I used the dtc again to convert the device tree source into a binary format and boot the system with the updated devicetree.

    Regards,

    -Kevin

  • 0 in reply to zedhed

    Hi kevin,

    Thanks for your valuable suggestion. i tried as per instruction.but i am unable to enter filesystem. i am unable to move in booting process as shown below

    Removing any system startup links for run-postinsts ...
      /etc/rcS.d/S99run-postinsts
    INIT: Entering runlevel: 1
    Unmounting remote filesystems...
    INIT: no more processes left in this runlevel


    can you give the suggestion. how to proceed for furhter step.


    Thanks & Regards,
    srinivas Rao

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  • 0 in reply to zedhed

    Hi kevin,

    Thanks for your valuable suggestion. i tried as per instruction.but i am unable to enter filesystem. i am unable to move in booting process as shown below

    Removing any system startup links for run-postinsts ...
      /etc/rcS.d/S99run-postinsts
    INIT: Entering runlevel: 1
    Unmounting remote filesystems...
    INIT: no more processes left in this runlevel


    can you give the suggestion. how to proceed for furhter step.


    Thanks & Regards,
    srinivas Rao

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