My base OS is Win7 and I run a guest operator system of Ubuntu 16.04 LTS. My 
Ubuntu would not boot. Win7 works fine.


> On Feb 4, 2018, at 18:42, Denis Heidtmann <> wrote:
> I am not  sure I interpret you comments correctly, but Win2k is my guest;
> Ubuntu 16.04 is the host.  Ubuntu runs fine.  Are you suggesting that I
> would need to install the Host to fix the Guest (or VB, whichever is  the
> culprit)?
>> On Sun, Feb 4, 2018 at 5:58 PM, Tony Schlemmer <> wrote:
>> I have window 7 laptop for work and when I tried to upgrade to Virtual Box
>> 5.2.6 with a Ubuntu 16.04 LTS it ran for a day. When left work I shutdown
>> the VirtualBox. When I tried restarting Ubuntu the next day I got nothing.
>> The logs were empty. I had no choice but to create another 40GB partition
>> with Ubuntu and down load every again.
>> Now I have memory card that back everything up on so if it happens again I
>> at least have my files. VirtualBox worked perfectly for 6 months. We use
>> GIT so I checked in my code changes in daily but I spent about 6 hours
>> reinstalling everything.
>> Tony
>>> On Feb 4, 2018, at 17:40, Denis Heidtmann <>
>> wrote:
>>> As soon as I click on start, the computer freezes--no mouse, no keyboard
>>> reaction.  The power button is all I could find to break the ice.
>> Reliably
>>> repeatable.  The VB logs are empty.
>>> My laptop  has the same OS (Ubuntu 16.04), same VBox, same win2k guest;
>>> works fine.  I have tried to compare the settings between the two
>> systems,
>>> and they are almost alike.  What I see different that seems unusual is
>> that
>>> the desktop system under Storage/IDE controller shows Win2kSP2 Clone.vdi
>>> and Empty for the Secondary Master, whereas the laptop shows
>>> VboxGuestAdditons_5.0.18.iso  I was certain that I installed the guest
>>> additions on the desktop.  VB had run fine up until this latest
>> attempt.  I
>>> will go looking for the guest additions.
>>> I would appreciate ideas on how to investigate this.
>>> -Denis
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