Lenovo N24 Stuck at init.xz



  • I am attempting to capture an image of a new Lenovo N24, its been a pain to get to this point so I’ll detail what I have done so far.
    Bios update to get it to see the USB Ethernet adapter. I have disabled both “secure boot” and the “Intel Platform Trust Technology” I have the kernel arguments set to:
    has_usb_nic=1 and am using the ipxe.efi bootfile. I also have Lenovo N23s which imaged fine at this same point, but something about the N24s wont allow it to pass. Any help would be appreciated. I am on the Latest version of fog 1.4.4 and the newest kernel version from July 22nd.
    alt text


  • Developer

    @bjonesqns This is kind of strange. Why would it get less far with the debug enabled binary. Never seen this before. So I checked out the code based on that same git hash number we see in the first picture and added the debugging again. Maybe this makes a difference. Please try 02_ipxe.efi (same download link).


  • Moderator

    @bjonesqns Sebastian would surely like your help debugging this. But if you need to get this system imaged today here is a tutorial I was talking about. https://forums.fogproject.org/topic/7727/building-usb-booting-fos-image

    Also I sent you some additional information in the FOG IM window.



  • It doesn’t get very far:
    alt text


  • Developer

    @bjonesqns Thanks for the fast reply. Looks as if my guess was spot on. The IDs match those in the RTL8152/3 driver. I start hating those. I am still not absolutely sure if it’s more likely to be an issue with UEFI firmware on the devices or a crappy NIC chip?!? Whatever it is, we have seen many people having issues with those RTL8152/3 based USB NICs.

    I’d still be interested to see what you get using 01_ipxe.efi - I just added even more debug information. So please download again if you already got it and give it a go.


  • Moderator

    @bjonesqns If that fails we have other options. But for your sake, I hope that is the answer. Its a much cleaner solution when pxe boot works as it should. If snponly works for some and ipxe works for others we have options for that too, but make take a little IT magic to get it working cleanly.



  • I am using the official Lenovo one, its in the verified USB adapters list. The hardware string is:
    USB\VID_17EF&PID_7205&REV_3000
    USB\VID_17EF&PID_7205

    It is the exact same adapter I’m just changing what image is associated with it.
    snp.efi, and realtek.efi yielded the same issue stuck at init.xz
    snponly.efi gets farther, and is capturing the image currently on the 2nd boot, the first time ended in an error. I think that may have been the trick. I will update if it successfully finishes and can push it back out.


  • Developer

    Sure George is right about booting and imaging being possible by using an USB FOS but I am still keen to find out about this. Possibly we will be able to figure this out in general and add a workaround to the iPXE code.


  • Moderator

    Yep, you are stuck at the handoff between iPXE and starting up FOS. We see this all the time with crappy uefi firmware (not implying anything about your current hardware stack). The correct answer is the hardware manufacturer needs to fix their firmware and your problems will go away. We have a band-aid solution to this until the manufacturer releases working firmware. This involves booting directly into FOS from a usb boot drive. This by chance also takes the requirement about having a firmware supported usb network adapter away. As long as FOS supports the usb network adapter it will work.


  • Developer

    @bjonesqns Please tell us what USB ethernet adapter you have. Please check the Hardware ID in windows device manager and post the full ID string here! I guess it is a realtek adapter as we have seen many issues with those lately. I am looking forward to see what IDs you post.

    Do you use the exact same USB adapter to boot the N23’s?

    You can try other iPXE binaries like snp.efi, snponly.efi or realtek.efi.

    I compiled a debug enabled iPXE for you to test as well. Find 01_ipxe.efi here. Download and put into your /tftpboot directory on the server. Just rename the original ipxe.efi file and put this one in place for testing.

    Please post pictures of what you see on screen just as you’ve done in the initial post (thanks for that by the way).


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