Failed to get an IP via DHCP


  • Hi,

    I have been using my current version 1.4.4 of FOG for a while with no issues on our Dell OptiPlex computers. However, with the new Dell OptiPlex 7480 model computers my school has purchased, I am getting an error.

    With all of the previous Dells I used the undionly.kpxe boot file. That did not work with the 7480. Instead, I had to use the snponly.efi or ipxe.efi in order to boot to the FOG menu.

    However, when trying to do a full or partial client registration, I get an error saying the computer – Failed to get an IP address via DHCP. I have attached a photo of the error.

    I have done some research on the Internet and the FOG forums and have not found a solution. Can someone assist?

    Thanks in advance for any assistance that can be provided.

    fog-error.JPG

  • Moderator

    @chuck2000 said in Failed to get an IP via DHCP:

    The image size is 240GB which in nearly the size of the entire SSD

    Without looking into this off the top of my head, I would say the source disk was encrypted with bitlocker, so during image capture partclone sees this and does a sector image copy instead of a disk image. You can see this during the blue partclone screen while its running you will see the format as RAW.


  • @george1421

    I upgraded the kernel and that resolved the IP address error. Thanks for the assistance. I really appreciate it.

    However, I then got an error that the hard disk was not found. I did some searching on these FOG forums and found that I needed to switch from RAID to ACHI for imaging. That is working although I am concerned with the size of the image. The image size is 240GB which in nearly the size of the entire SSD. All my previous images were about 30GB.

    Is there anything that can be done about that? Please let me know.

  • Moderator

    @chuck2000 yes that will work.


  • @george1421

    Thanks for your reply. Will this kernel be suitable:

    Official Published Kernels

    Kernel - 5.10.34 TomElliott
    Date : May 2, 2021
    Version : 5.10.34
    FOG Type: TomElliott
    PC 64 Bit
    Arch Type: PC 64 Bit

    Please let me know.

  • Moderator

    @chuck2000 Well 1.4.4 is pretty old. The recommended action is to upgrade to 1.5.9, but if you can’t do that right now, at least upgrade the FOS Linux kernel to 5.6.18 or later. FOG Configuration->Kernel update. This updated FOS Linux kernel should support this hardware. What is wrong is the kernel is missing the driver for this new hardware because the kernel you are using is several years old.

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