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    Unbootable VHD backups

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    • D Offline
      DustinB @Schmidty86
      last edited by

      @Schmidty86 You might need to go into BIOS and check to see if this now missing device is still listed, and disable it if it is.

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      • S Offline
        Schmidty86 @DustinB
        last edited by Schmidty86

        @DustinB how do you get into the bios of a vm that wont even post? That also would only account for fixing one of the two VM's even if it did fix the problem.

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        • D Offline
          DustinB @Schmidty86
          last edited by DustinB

          @Schmidty86 Try disabling the boot devices under advanced

          https://xcp-ng.org/forum/topic/8357/i-cannot-enter-the-vm-boot-menu/2

          then you'll have more time to see what the options are to get into BIOS.

          It might even be as simple as tapping the Shift Key while the VM starts.... I don't have to do it often enough to commit to memory, but you can definitely get into BIOS on a VM that "isn't posting". You've technically made it past post, and are failing due to a missing boot device.

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          • S Offline
            Schmidty86 @DustinB
            last edited by

            @DustinB You cannot disable all the boot devices in xoa.

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            • S Offline
              Schmidty86 @Schmidty86
              last edited by

              Got into the boot but, change what now?
              94f2e91d-32e9-4ffe-aa07-7c6a9d95c95b-image.png

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              • D Offline
                DustinB @Schmidty86
                last edited by

                @Schmidty86 I dont see your disk at all listed, only PXE (network booting) and then the MISC device (which is the questionable item).

                The internal Shell isn't relevant to this conversation.

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                  DustinB @DustinB
                  last edited by DustinB

                  said in Unbootable VHD backups:

                  @Schmidty86 I dont see your disk at all listed, only PXE (network booting) and then the MISC device (which is the questionable item).

                  The internal Shell isn't relevant to this conversation.

                  As a side thought, re-enable the DISK under advanced and then reboot into BIOS and see if the disk is listed.

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                    Schmidty86 @DustinB
                    last edited by Schmidty86

                    @DustinB 87c00940-b25f-46ec-ba09-94e7f99414bf-image.png

                    still nothing. and i do have the vhd attached.
                    3428795d-3994-4d14-b41f-ef7bd294dedb-image.png

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                    • D Offline
                      DustinB @Schmidty86
                      last edited by

                      @Schmidty86 That disk appears to be a secondary disk, is this just a "data volume" and not a boot volume (looking at XO where it shows xvdb)?

                      Hrm as to the fact that it still shows it as a misc disk.... I'm at a loss.

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                      • S Offline
                        Schmidty86 @DustinB
                        last edited by

                        @DustinB To my knowledge this is the bootable volume. all the other backups in the parent folder are just differential backups that are much much smaller.

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                        • S Offline
                          Schmidty86 @DustinB
                          last edited by

                          @DustinB Also when i look at the VHD in 7zip i can clearly see that it has a boot sector.
                          735e1907-f22a-4393-8070-3c9d9f755d71-image.png

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                          • AtaxyaNetworkA Offline
                            AtaxyaNetwork Ambassador @Schmidty86
                            last edited by

                            @Schmidty86 Try to detach the disk and reattach, it should be xvda in order to be bootable

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                            • S Offline
                              Schmidty86 @AtaxyaNetwork
                              last edited by

                              @AtaxyaNetwork Sadly I've done this multiple times as well with no luck of it turning into that format.

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                              • D Offline
                                DustinB @AtaxyaNetwork
                                last edited by

                                @AtaxyaNetwork said in Unbootable VHD backups:

                                @Schmidty86 Try to detach the disk and reattach, it should be xvda in order to be bootable

                                That's what I was thinking as well, but obviously something is off with this VM.

                                @Schmidty86 is the old host still online? If so you might be able to perform a Live Migration or a replication job to copy it from the old host to the new.

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