I recently updated my VirtualBox after not using it for about half a year (Newest version - 5.0.22 r108108). I have a 200GB VM running Ubuntu 64-bit (I can't remember what version exactly) and now simply tried to start it again in VirtualBox.
Having one issue fixed which solution is probably wrong, but I did not seem to get any other way from Google to work
(My virtualisation is and was always enabled in BIOS settings)
- VT-x is not available. (VERR_VMX_NO_VMX)
by manually editing the *.vbox file and setting these values from true to false:
<HardwareVirtEx enabled="false"/>
<HardwareVirtExNestedPaging enabled="false"/>
<HardwareVirtExVPID enabled="false"/>
a second issue pops up, or rather - was unnoticed there all the time.
Suddenly it seems that ALL 64-bit versions are gone from the combobox[es] when trying to create a new virtual machine.
I have the VM image plus old backups, and I can't add a new 64-bit machine with this existing VM image. I'm done with trying to find an answer through Google and found here only a few hints which don't seem to help. Also under the "System" settings of the VM, it decided to set itself to 1 core, which was previously set on 4. This slider appears to be disabled.
Additional info:
I have a 64-bit Windows 10 VM running smoothly.
My computer meets the requirements specified here.
If you do not see the 64-bit options in the drop-down list then VirtualBox thinks that your machine has not met the pre-requisites above.
I am not quite sure why VirtualBox has now decided that my system suddenly doesn't meet the requirements anymore - no hardware changes.
Does anyone know a solution or a few hints in order to solve this problem ?