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    Windows 2025 Standard 24H2.11 (iso release of sept 25) crash on reboot with "INACCESSIBLE BOOT DEVICE 0x7B" in XCP 8.2.1 and XCP 8.3

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    • F Offline
      flakpyro @dinhngtu
      last edited by

      @dinhngtu Well that is slightly concerning! Ill be sure to not remove Xen Tools on any of these VMs until we can get this resolved. We have a handful of production server 2025 VMs that im now slightly worried about! I should note that last week we did update them to version 9.4.2 of the tools, which tends to require 2 reboots to fully install and we didn't run into any issues.

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      • D Offline
        dinhngtu Vates 🪐 XCP-ng Team
        last edited by

        I've narrowed down the problem to a set of patches. Will continue to diagnose.

        1 Reply Last reply Reply Quote 1
        • A Online
          acebmxer
          last edited by acebmxer

          Just tested Win 11 25H2 iso just released today. No issues with fresh install.

          Management tools installed and Citrix PV drivers installed via windows update.

          Screenshot 2025-09-30 150512.png

          P 1 Reply Last reply Reply Quote 0
          • P Offline
            Pilow @acebmxer
            last edited by

            @acebmxer did you test latest Xen Tools ?

            dd2498da-63f0-4206-8b8a-903a57b6506c-image.png

            https://www.xenserver.com/downloads#lightbox-20160
            151beb48-cea8-435a-9194-96bfdb805e62-image.png
            7 days old though

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            • A Online
              acebmxer @Pilow
              last edited by

              @Pilow

              Did dirty upgrade left all boxes checked and vm is setup to update drivers via windows update....

              Screenshot 2025-09-30 151025.png

              I have rebooted vm and restarts no issues.

              Screenshot 2025-09-30 151319.png

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              • D Offline
                dinhngtu Vates 🪐 XCP-ng Team
                last edited by

                The cause has been found, and a fix is under way. Stay tuned.

                F 1 Reply Last reply Reply Quote 1
                • F Offline
                  flakpyro @dinhngtu
                  last edited by

                  @dinhngtu Thats great news!

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                  • D Offline
                    dinhngtu Vates 🪐 XCP-ng Team
                    last edited by dinhngtu

                    Hi all, here's a pre-build of the fix for anyone who wants to test (8.3 only):

                    wget https://koji.xcp-ng.org/repos/user/8/8.3/xcpng-users.repo -O /etc/yum.repos.d/xcpng-users.repo
                    yum update --enablerepo=v8.3-u-ndinh1
                    
                    F A 2 Replies Last reply Reply Quote 2
                    • F Offline
                      francesco-maria @dinhngtu
                      last edited by

                      @dinhngtu will be released also for 8.2.1?

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                      • olivierlambertO Online
                        olivierlambert Vates 🪐 Co-Founder CEO
                        last edited by

                        8.2.1 is EOL: https://xcp-ng.org/blog/2025/09/16/xcp-ng-8-2-lts-reached-its-end-of-life/

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                        • A Online
                          Andrew Top contributor @dinhngtu
                          last edited by

                          @dinhngtu On a quick test, the ISO boots and installs. When the VM boots from the HD it crashes (and on reboots).

                          Updating XCP 8.3 with qemu-4.2.1-5.2.12.2~fixvwc1.1.xcpng8.3.x86_64 solves the issue and the installed windows image boots correctly without any additional changes.

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                          • olivierlambertO Online
                            olivierlambert Vates 🪐 Co-Founder CEO
                            last edited by

                            That's great! \o/

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                            • F Offline
                              francesco-maria @olivierlambert
                              last edited by

                              @olivierlambert this problem can cause a crash on update of windows 2025 VM on xcp-ng 8.2.1 or remains only a problem for fresh install?

                              D 1 Reply Last reply Reply Quote 0
                              • olivierlambertO Online
                                olivierlambert Vates 🪐 Co-Founder CEO
                                last edited by

                                8.2 is EOL, and also IDK how it's affected by this issue.

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                                • D Offline
                                  dinhngtu Vates 🪐 XCP-ng Team @francesco-maria
                                  last edited by

                                  @francesco-maria I haven't determined what exact conditions would trigger the issue. It seems to only happen on new installations for now, but it could very well change in the future. Though as long as you keep the Xen drivers installed, things should be OK.

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