A few days ago I successfully created a 64 bit Linux guest machine on my 64 bit Windows 10 host. Today, when I tried to boot the guest again (I've booted it several times successfully before today), it freezes on boot.
After fiddling around, trying to get it to boot, I decide to simply create a new one. When I click new, the only versions available to me are 32 bit.
I've looked around the forums for an answer, and most answers involve VT-x availability. I am not very knowledgeable about Virtual Machines in general, but I am pretty sure VT-x is available given that I have booted the 64 bit guest on multiple occasions prior. The only thing I did from the last time I booted the guest until now is shut down my PC.
Installed a 64 bit guest, stopped working, can't install 64 bit any more
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Re: Installed a 64 bit guest, stopped working, can't install 64 bit any more
Take a look at this: I have a 64bit host, but can't install 64bit guests
If you could run the 64-bit guest before but can't run it now, something new is taking up VT-x on your PC. AV update, hyper-v getting turned on, programming IDE installed, etc.
If you could run the 64-bit guest before but can't run it now, something new is taking up VT-x on your PC. AV update, hyper-v getting turned on, programming IDE installed, etc.
Re: Installed a 64 bit guest, stopped working, can't install 64 bit any more
That post is what I am referring to. I have no AV updates, disabled all that junk a long time ago. HyperV is off. Nothing has changed since I booted the guest the last time.
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Re: Installed a 64 bit guest, stopped working, can't install 64 bit any more
Having Virtualbox's 64-bit capability suddenly disappear is a sure sign of something else using it first.
Try to start a 64-bit machine, let it error and close. Then post the zipped log for that run (see Minimum info needed to find the log). The log will confirm whether the VT-x is being taken away from your Virtualbox.
If VT-x is being taken, then that's why Virtualbox can no longer run 64-bit guests. Unfortunately Virtualbox has no tool to tell what is using VT-x. VT-x doesn't just disappear off a PC like a program might, it must be turned off in the BIOS or taken by another program before Virtualbox can take it.
Try to start a 64-bit machine, let it error and close. Then post the zipped log for that run (see Minimum info needed to find the log). The log will confirm whether the VT-x is being taken away from your Virtualbox.
If VT-x is being taken, then that's why Virtualbox can no longer run 64-bit guests. Unfortunately Virtualbox has no tool to tell what is using VT-x. VT-x doesn't just disappear off a PC like a program might, it must be turned off in the BIOS or taken by another program before Virtualbox can take it.
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Re: Installed a 64 bit guest, stopped working, can't install 64 bit any more
I just saw this:
Does that mean you're not using it, or have you completely disabled and uninstalled it, and cold-shut-down & re-powered-up the PC?HyperV is off
Re: Installed a 64 bit guest, stopped working, can't install 64 bit any more
I have disabled HyperV through the "Turn Windows Features On or Off" option from the control panel. I am not sure if that means it is uninstalled, but I did do a cold boot today.
I'm not completely familiar with VirtualBox, but I have attached a log file. If that is not the right one, I'll see if I can figure that out.
Edit: I've replaced it with a zip file of the VBoxHardening.log because I originally attached just the VBox.log
I'm not completely familiar with VirtualBox, but I have attached a log file. If that is not the right one, I'll see if I can figure that out.
Edit: I've replaced it with a zip file of the VBoxHardening.log because I originally attached just the VBox.log
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Re: Installed a 64 bit guest, stopped working, can't install 64 bit any more
You did find the correct log, good! This line:
seems to say VT-x is turned off or at least unavailable to Virtualbox. Double-check that VT-x is actually still on in the BIOS, and double-check that your processor is actually VT-x-capable, and that hyper-v is really unchecked in "Turn Windows Features On or Off". Aside from that, I would not be able to suggest anything else.
Phone emulators, antivirus, integrated development environments, etc., have been reported to interfere with Virtualbox's usage of VT-x. Test-removing these programs or poking around in their properties pages and finding & deactivating their hardware virtualization usage would be necessary to allow Virtualbox to run 64-bit again.
Code: Select all
00:00:01.702246 HM: HMR3Init: Falling back to raw-mode: VT-x is disabled in the BIOS for all CPU modes
Phone emulators, antivirus, integrated development environments, etc., have been reported to interfere with Virtualbox's usage of VT-x. Test-removing these programs or poking around in their properties pages and finding & deactivating their hardware virtualization usage would be necessary to allow Virtualbox to run 64-bit again.
Re: Installed a 64 bit guest, stopped working, can't install 64 bit any more
I appreciate that you're giving me all the solutions you can think of, but I'd say yes, it is because I could run the machine beforescottgus1 wrote:and double-check that your processor is actually VT-x-capable
That being said, however, I double checked the BIOS settings and everything was in place, so I cold-booted it again just to see what would happen and suddenly the Intel Virtualization Technology setting was disabled. Enabled and booted to success.
I would be remiss, however, if I just assumed everything will be hunky dory from here on out, because I can't recall doing anything that would prompt this to happen. Thank you for your help, and I'll be back here mewling for more if things go nuts again
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Re: Installed a 64 bit guest, stopped working, can't install 64 bit any more
Interesting. Maybe a bad BIOS chip? Put a note up somewhere for if it happens again
Glad it's working now!
Glad it's working now!