Re: [win-pv-devel] [Xen-users] windows pv drivers 8.1 series INACCESSIBLE_BOOT_DEVICE windows 10

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Éliás Tamás [mailto:et@xxxxxxx]
> Sent: 08 March 2016 20:24
> To: Paul Durrant; win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> Subject: Re: [win-pv-devel] [Xen-users] windows pv drivers 8.1 series
> INACCESSIBLE_BOOT_DEVICE windows 10
> 
> Hi.
> > I've tested removal of the 8.2 driver in safe mode and re-installation in
> normal mode on win7 and win10 and it works ok for me, so I'm not sure why
> things are going wrong for you.
> > The cause of the problem, no doubt though, is that for some reason when
> you un-install XENVBD Windows is not running the driver co-installer. No idea
> why that would be happening but because it is not being run then the
> following registry key gets left lying around:
> >
> > HKLM/SYSTEM/CurrentControlSet/services/XEN/Unplug/DISKS
> (REG_DWORD) == 1
> >
> > With this in place, on the next boot XENFILT will unplug emulated disks but,
> because XENVBD has been removed, there is nothing to enumerate PV disks
> and so the VM has no disks, hence a 0x7B BSOD.
> > So, I suggest you go into safe mode and manually remove that registry key.
> You should then be able to boot back into normal mode and clean up all
> remaining drivers. That is:
> >
> > - Make sure all packages are un-installed via Control Panel
> > - Then look in C:\windows\System32\DriverStore\FileRepository and make
> sure there no old copies of driver packages in there
> > - Then reboot
> > - Then open up device manager and make sure there are no PV devices
> around
> >
> > When you have fully cleaned up you should be safe to install new copies of
> the drivers.
> Yes, this did the trick! Working!
> 

Excellent. Good to hear,

  Paul

> 
> >
> >   Paul
> >
> >
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