PXE loop after reboot only



  • I find that a lot of our machines (Dell) and virtual machines seem to boot loop if they are restarted, but not from cold boot?? can anyone explain or suggest a resolution.

    The screenshot is just before a loop. (THANKS)

    78af9037-0db5-41da-8ce4-356f60edf482-image.png


  • Senior Developer

    @ITCC Switch your DHCP config to point to ipxe.pxe instead of undionly.kpxe and the issue should go away.


  • Senior Developer

    @ITCC Switch your DHCP config to point to ipxe.pxe instead of undionly.kpxe and the issue should go away.


  • Moderator

    @ITCC said in PXE loop after reboot only:

    downloads the image then it reboots to complete sysprep of our image but gets stuck

    Just to be clear it gets stuck and boot loops in windows oobe/winsetup? This is after FOG has released the computer? This is different than what your original picture indicates. I’m just trying to understand how FOG fits into the error you see.



  • I mean a USB NIC Dongle.

    the 1st again works fine and then it boot loops.

    so during the image process:-

    You boot and it downloads the image then it reboots to complete sysprep of our image but gets stuck. We eaither switch off the PC and back on (continues) or remove the USB NIC and it continues…

    But we have seen this on a few internal NIC devices also.


  • Moderator

    @ITCC said in PXE loop after reboot only:

    Some being fogged via a USB dongle.

    Just for clarity, if you are booting FOS Linux directly from a usb stick it doesn’t use iPXE at all. The error message from the OP is because iPXE sees the NIC but its not getting a response from dhcp. If you are getting this error message with FOS Linux then 2 things could be at fault.

    1. FOS Linux doesn’t have the network driver you are using built in. (not probable if you are a pcie nic card, possible if you are using a usb to ethernet dongle).
    2. Your network switch has standard Spanning Tree (STP) enabled, where you should have one of the fast spanning tree protocols enabled (RSTP, MSTP, port-fast, or what ever your switch vendor calls it). You can test if its a spanning tree issue by placing an unmanged, dumb, (cheap) network switch between the pxe booting computer and the building network switch. If it boots cleaning with that dumb switch in between then its a spanning tree issue with your network.


  • No, we get it with other devices. Some being fogged via a USB dongle. could that be an issue?


  • Moderator

    I have seen this only with virtual box. It only boots correctly from a cold power up. Make sure you are on the latest release of virtualbox.

    @Tom-Elliott Do I remember that you commended on this issue a while ago, could you refresh my memory if there is a fix/work-around for this condition?


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