VM Failing to Reboot
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@kagbasi-ngc I think for that it'd be more appropriate to contact our support team, which will be able to help you directly on your infrastructure. I'd also like to keep any troubleshooting information on the forum in case someone runs into a similar problem.
Non-inbox drivers mean drivers with "Inbox : No" as seen in your screenshot.
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@dinhngtu Roger that, agreed.
I just got back to the lab, so I'm gonna try and remove those
non-inbox driversand see what happens. -
@dinhngtu Unfortunately, I don't have good news. I removed all the
non-inbox drivers, one by one (rebooting after removing each one), yet still the VM is crashing with the same BSOD message. -
@kagbasi-ngc Could the VM get into Safe Mode?
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@dinhngtu Yes, it does. There is no
Last Known Good Stateoption however. -
@kagbasi-ngc The fact that your VM still boots in Safe Mode means that there's still some drivers blocking Windows from booting in normal mode. Please enable boot logging by running
bcdedit /store bcd /set {default} bootlog yesthen post the boot logs of normal mode versus safe mode. This log is found atC:\Windows\ntbtlog.txt.Could you send another copy of your SYSTEM hive?
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@dinhngtu Just to clarify, the VM isn't booting into Safe Mode; I have to trigger it by smashing the F8 key at boot. It boots normally then goes to the BSOD.
I will get the logs for you shortly. Do you want me to drop them in the same location you sent earlier?
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@kagbasi-ngc Just to confirm, if you use the F8 menu it boots into Safe Mode without getting a BSOD, right? Please upload the SYSTEM hive to the same location.
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@dinhngtu Yes, it does. The only time I get the BSOD is if I allow the VM to boot normally without interfering.
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@dinhngtu So I managed to enable the boot logging, allowed the VM to do a normally boot to BSOD, then I booted with Hiren's, however, I'm not seeing the log file at C:\Windows.
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@kagbasi-ngc You might need the debugger in normal mode. Attach the debugger right at boot time and run the following command (beware the exact spelling):
sxe -c "lm1mna (poi(rdx));g" ldClick Go until Windows loads completely or until you get a VM crash in Windbg, then paste the entire Windbg output.
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@dinhngtu sorry for the delayed response, having trouble getting the debugger to reattach. I've re-input all the boot parameters, yet still, no data is being piped to the debug port on the host.
Do you think perhaps the removal of the drivers we did yesterday has removed the VM's ability to talk to the host?
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@kagbasi-ngc It shouldn't, the debugger drivers are built into Windows. If you're having issues with attaching the debugger, you can get into the F8 menu, start attaching WinDbg then choose Debugging mode in the F8 menu to start the guest. This should give WinDbg the correct timing to attach to the guest.
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@dinhngtu thanks for the pointers, but nothing I'm doing seems to be working. The debugger seems to have connected to the host successful, but the VM isn't transmitting any data to the debugport.
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@kagbasi-ngc Does it get stuck at "Waiting to reconnect..."? Do you get anything when telnet-ing to the VM's serial port?
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@dinhngtu Yes (see image below). I'm on my way back to the office now, should be there in about 45 mins and will try telnet to the host tcp port 7001 and see what I get.
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@dinhngtu said in VM Failing to Reboot:
Do you get anything when telnet-ing to the VM's serial port?
Sorry for the delayed response. I just attempted to telnet to the VM's serial port on the host, while watching IPTables, and here's the behavior I observed:
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The PuTTY telnet session remains open while the VM is powered up and attempting to boot.
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As soon as the BSOD is encountered and the VM powers off, the telnet session window terminates.
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While watching IPTables, I can see the pkts count increment by 5 each time I attempt a connection.
Given the above observations, I'm convinced that the host is setup correctly, but it's the VM that is not dumping any data to the serial console on the host.
This is the IPTables rule I was watching:
Chain xapi-INPUT (1 references) pkts bytes target prot opt in out source destination 70 3636 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:7001 -
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@kagbasi-ngc Could you check
bcdedit /store bcd /enum all(you can do this from Safe Mode, just dobcdedit /enum all) to see if the debugger settings are still there? For reference, it should look like:Windows Boot Loader ------------------- identifier {current} ... debug Yes ... Debugger Settings ----------------- identifier {dbgsettings} debugtype Serial debugport 1 baudrate 115200 -
@dinhngtu Checking now.
As soon as I selected
Safe Mode with Command Prompt, the following came up. So I'm waiting for it to finish.
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@dinhngtu said in VM Failing to Reboot:
@kagbasi-ngc Could you check
bcdedit /store bcd /enum all(you can do this from Safe Mode, just dobcdedit /enum all) to see if the debugger settings are still there? For reference, it should look like:Here you go. As far as I can tell, the settings are there.
Firmware Boot Manager --------------------- identifier {fwbootmgr} displayorder {869b8842-cfa5-11ef-88bd-6690debbc340} {bootmgr} {4953fce7-d2e8-11ef-9050-806e6f6e6963} {68f8db89-dac7-11ef-b603-806e6f6e6963} {869b8841-cfa5-11ef-88bd-6690debbc340} {869b8846-cfa5-11ef-88bd-6690debbc340} {cc338294-d2fd-11ef-904b-806e6f6e6963} {869b8844-cfa5-11ef-88bd-6690debbc340} timeout 0 Windows Boot Manager -------------------- identifier {bootmgr} device partition=S: path \EFI\Microsoft\Boot\bootmgfw.efi description Windows Boot Manager locale en-US inherit {globalsettings} bootshutdowndisabled Yes default {default} resumeobject {869b8847-cfa5-11ef-88bd-6690debbc340} displayorder {default} toolsdisplayorder {memdiag} timeout 30 Firmware Application (101fffff) ------------------------------- identifier {4953fce7-d2e8-11ef-9050-806e6f6e6963} description UEFI Misc Device 2 Firmware Application (101fffff) ------------------------------- identifier {68f8db89-dac7-11ef-b603-806e6f6e6963} description UEFI Misc Device 3 Firmware Application (101fffff) ------------------------------- identifier {869b8841-cfa5-11ef-88bd-6690debbc340} description UiApp Firmware Application (101fffff) ------------------------------- identifier {869b8842-cfa5-11ef-88bd-6690debbc340} description UEFI Misc Device Firmware Application (101fffff) ------------------------------- identifier {869b8844-cfa5-11ef-88bd-6690debbc340} description UEFI PXEv6 (MAC:7E30B1BB2307) Firmware Application (101fffff) ------------------------------- identifier {869b8846-cfa5-11ef-88bd-6690debbc340} description EFI Internal Shell Firmware Application (101fffff) ------------------------------- identifier {cc338294-d2fd-11ef-904b-806e6f6e6963} description UEFI PXEv4 (MAC:7E30B1BB2307) Windows Boot Loader ------------------- identifier {default} device partition=C: path \windows\system32\winload.efi description Windows Server locale en-US inherit {bootloadersettings} recoverysequence {ad69be4c-cf8c-11ef-9047-6690debbc340} displaymessageoverride Recovery recoveryenabled Yes isolatedcontext Yes allowedinmemorysettings 0x15000075 osdevice partition=C: systemroot \windows resumeobject {869b8847-cfa5-11ef-88bd-6690debbc340} nx OptOut bootlog Yes Windows Boot Loader ------------------- identifier {ad69be4c-cf8c-11ef-9047-6690debbc340} device ramdisk=[\Device\HarddiskVolume4]\Recovery\WindowsRE\Winre.wim,{ad69be4d-cf8c-11ef-9047-6690debbc340} path \windows\system32\winload.efi description Windows Recovery Environment locale en-US inherit {bootloadersettings} displaymessage Recovery osdevice ramdisk=[\Device\HarddiskVolume4]\Recovery\WindowsRE\Winre.wim,{ad69be4d-cf8c-11ef-9047-6690debbc340} systemroot \windows nx OptIn bootmenupolicy Standard winpe Yes Resume from Hibernate --------------------- identifier {869b8847-cfa5-11ef-88bd-6690debbc340} device partition=C: path \windows\system32\winresume.efi description Windows Resume Application locale en-US inherit {resumeloadersettings} recoverysequence {ad69be4c-cf8c-11ef-9047-6690debbc340} recoveryenabled Yes isolatedcontext Yes allowedinmemorysettings 0x15000075 filedevice partition=C: custom:21000026 partition=C: filepath \hiberfil.sys debugoptionenabled No Windows Memory Tester --------------------- identifier {memdiag} device partition=S: path \EFI\Microsoft\Boot\memtest.efi description Windows Memory Diagnostic locale en-US inherit {globalsettings} badmemoryaccess Yes EMS Settings ------------ identifier {emssettings} bootems Yes Debugger Settings ----------------- identifier {dbgsettings} debugtype Serial debugport 1 baudrate 115200 RAM Defects ----------- identifier {badmemory} Global Settings --------------- identifier {globalsettings} inherit {dbgsettings} {emssettings} {badmemory} Boot Loader Settings -------------------- identifier {bootloadersettings} inherit {globalsettings} {hypervisorsettings} Hypervisor Settings ------------------- identifier {hypervisorsettings} hypervisordebugtype Serial hypervisordebugport 1 hypervisorbaudrate 115200 Resume Loader Settings ---------------------- identifier {resumeloadersettings} inherit {globalsettings} Device options -------------- identifier {ad69be4d-cf8c-11ef-9047-6690debbc340} description Windows Recovery ramdisksdidevice partition=\Device\HarddiskVolume4 ramdisksdipath \Recovery\WindowsRE\boot.sdi