Re: [Xen-users] Effect of installing Xen on VT enabled machine

[Glenn <glenn@xxxxxxxxxxx>]

On Thu, 15 Mar 2007 07:59:11 pm Praveen Kushwaha wrote:
> Hi mat,
>               Sorry for interrupting you.
>                 Actually I have investigated a method for runing an
> already installed windows as domu. There is a tool sysprep.exe provided
> by windows which creats the image of windows with all the
> configurations. Do you know about this tool? Since it creates image with
> all the configurations therefore this image is used as intallation
> image.
> Therefore my considerations is that we can provide that image into
> creation of domu. By this way we can make run already operationl windows
> as domu.
>
> What is your opnion?

my opinion is that looks great - I'd never thought of doing it that way.

I'll let you know how i go with it


>
> You can find about sysprep.exe tool at following links
>
> http://www.microsoft.com/technet/prodtechnol/winXPpro/deploy/introductio
> n.mspx
>
> http://www.microsoft.com/technet/prodtechnol/winXPpro/deploy/duplication
> .mspx
>
>
>
> Thanks,
> Praveen Kushwaha
>
>
> -----Original Message-----
> From: Petersson, Mats [mailto:Mats.Petersson@xxxxxxx]
> Sent: Thursday, March 08, 2007 3:30 PM
> To: Praveen Kushwaha; xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-users] Effect of installing Xen on VT enabled machine
>
> > -----Original Message-----
> > From: Praveen Kushwaha [mailto:praveen.kushwaha@xxxxxxxxxxx]
> > Sent: 08 March 2007 09:50
> > To: Petersson, Mats; xen-users@xxxxxxxxxxxxxxxxxxx
> > Subject: RE: [Xen-users] Effect of installing Xen on VT
> > enabled machine
> >
> >
> > Hi mat,
> >             Again thanks a lot for your replies.
> >             Basically we have to run same installed windows as domu
> > in xen.                             According to you if we will run if we
> > will run same installed windows as domu then it might be that some
> > applications will not run properly, that is fine. What I am asking is
> > the method I have described (first create image of windows
> > then install
> > xen and finally create domu using that image) is possible or not.
> > Because in creation of domu it ask for the ISO image. Since we can't
> > create the ISO image of installed windows, we can only create the disk
> > image of installed windows. The question is that will we be able to
> > create domu using that disk image?
>
> It MAY work to make a duplicate of the installed windows. The only
> problem with that method is that Windows don't like it when ALL the
> drivers that it thinks is going to work DO NOT work, because ALL the
> hardware in the system is different. Even changing a single component in
> Windows can cause big problems...
>
> But if you want to try this, fine - just don't come complaining if it
> doesn't work.
>
> --
> Mats
>
> > In case if we are not able to create domu using that disk image. Is
> > there any other method through which we can run already installed
> > windows as domu,
> > considering that we are not installing windows again.
> >
> > If you will throw some light on it, it will be great for me.
> >
> >
> >
> > Thanks,
> > Praveen Kushwaha
> >
> >
> >
> >
> > -----Original Message-----
> > From: Petersson, Mats [mailto:Mats.Petersson@xxxxxxx]
> > Sent: Wednesday, March 07, 2007 5:23 PM
> > To: Praveen Kushwaha; xen-users@xxxxxxxxxxxxxxxxxxx
> > Subject: RE: [Xen-users] Effect of installing Xen on VT
> > enabled machine
> >
> > > -----Original Message-----
> > > From: Praveen Kushwaha [mailto:praveen.kushwaha@xxxxxxxxxxx]
> > > Sent: 07 March 2007 11:30
> > > To: Petersson, Mats; xen-users@xxxxxxxxxxxxxxxxxxx;
> > > xen-devel@xxxxxxxxxxxxxxxxxxx
> > > Subject: RE: [Xen-users] Effect of installing Xen on VT
> > > enabled machine
> > >
> > >
> > >
> > > Hi mat,
> > >             Thanks a lot again for such a prompt reply.
> > >             Basically my problem is that. I have a VT enabled
> > > machine in
> > > which windows is installed in s different partition. Now I
> >
> > install xen
> >
> > > in different partiton (first linux and then xen). Now I want
> > > to run that
> > > already installed windows in domu on xen. According to you
> >
> > hardware is
> >
> > > changed for windows now so it will be difficult to run.
> > > Then what other method is
> > >
> > > 1. First create an image of installed windows
> >
> > No, you should install Windows AGAIN, this time in the
> > Virtual machine.
> >
> > > 2. Now install xen on machine (first linux then xen)
> >
> > This is the FIRST step.
> >
> > > 3. Now create domU for windows using the image file(Give the
> > > path image
> > > file which is on disk in creation of domu).
> >
> > That sounds right. And by the way, if you wish to pass the original
> > Windows installation as a physical disk to your Windows domU,
> > you can do
> > that too, and it can then be used as to store files - you just don't
> > start the Windows installation that is on there. If you do
> > things right,
> > you can probably run  most applications you have on the
> > already existing
> > installation too - but some applications become unhappy when
> > you change
> > the environment around them, so may not work [also, apps that install
> > .DLL's into the Windows directory will need to have the relevant DLL's
> > re-installed on your Guest installatin].
> >
> > --
> > Mats
> >
> > > Is this process right for runing the already operational windows as
> > > domu.
> > > Please confirm me. Is there any other method for running already
> > > operational windows as domu on xen. If there is please let me know.
> > > Basically I have to run already operational window on xen.
> > >
> > > Thanks,
> > > Praveen Kushwaha
> > >
> > > -----Original Message-----
> > > From: Petersson, Mats [mailto:Mats.Petersson@xxxxxxx]
> > > Sent: Wednesday, March 07, 2007 4:10 PM
> > > To: Praveen Kushwaha; xen-users@xxxxxxxxxxxxxxxxxxx;
> > > xen-devel@xxxxxxxxxxxxxxxxxxx
> > > Subject: RE: [Xen-users] Effect of installing Xen on VT
> > > enabled machine
> > >
> > > > -----Original Message-----
> > > > From: Praveen Kushwaha [mailto:praveen.kushwaha@xxxxxxxxxxx]
> > > > Sent: 07 March 2007 10:28
> > > > To: Petersson, Mats; xen-users@xxxxxxxxxxxxxxxxxxx;
> > > > xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > Subject: RE: [Xen-users] Effect of installing Xen on VT
> > > > enabled machine
> > > >
> > > > Hi mat,
> > > >               Thanks a lot for the reply.
> > > >               But I have one more confusion. Suppose in my
> > > > machine there
> > > > is more than one partition. In one partition windows is
> > > > installed. Now I
> > > > want to install xen on it, I will install linux on
> > >
> > > different partition
> > >
> > > > and then will install xen in it(on linux). In that case,
> > >
> > > will there be
> > >
> > > > any effect on the windows which is in different partition. If
> > > > there will
> > > > be any effect, then to run that windows as a domu, will we have to
> > > > install it again?
> > >
> > > There will not be any effect on the Windows that is already
> > > installed as
> > > such - but running that as a guest within Xen will possibly cause
> > > problems (I think there's a feature called "Hardware profiles" in
> > > Windows that COULD be used to fix the fact that the hardware
> > > "appears to
> > > change completely", but I'm not at all confident that Windows will
> > > actually cope with this)
> > >
> > > It's notoriously difficult to take a hard-disk with (any
> > > modern versions
> > > of) Windows and move it to another machine without re-installing
> > > Windows. Running Windows as a guest in a virtual machine is
> > > essentially
> > > the same as moving the hard-disk, because ALL of the
> >
> > hardware will be
> >
> > > different - chipset, hard-disk interface, network, graphics,
> > > usb-devices, etc, etc.
> > >
> > > So I suggest that you install another copy of Windows using
> >
> > Xen (then
> >
> > > Windows will detect the correct devices). If you install on
> >
> > a physical
> >
> > > partition, then Windows running on the hardware could be used
> > > to access
> > > the same data as the virtual machine, so your documents can
> > > be accessed
> > > from both the virtual and the real windows setups.
> > >
> > > --
> > > Mats
> > >
> > > > Please give me your ideas.
> > > >
> > > > Thanks,
> > > > Praveen Kushwaha
> > > >
> > > > -----Original Message-----
> > > > From: Petersson, Mats [mailto:Mats.Petersson@xxxxxxx]
> > > > Sent: Wednesday, March 07, 2007 3:15 PM
> > > > To: Praveen Kushwaha; xen-users@xxxxxxxxxxxxxxxxxxx;
> > > > xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > Subject: RE: [Xen-users] Effect of installing Xen on VT
> > > > enabled machine
> > > >
> > > > > -----Original Message-----
> > > > > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> > > > > [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
> > > > > Praveen Kushwaha
> > > > > Sent: 06 March 2007 12:07
> > > > > To: xen-users@xxxxxxxxxxxxxxxxxxx; xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > > Subject: [Xen-users] Effect of installing Xen on VT
> > >
> > > enabled machine
> > >
> > > > > Hi,
> > > > >
> > > > >
> > > > >
> > > > >            I have a  VT enabled machine on which windows xp
> > > > > has been installed. Now I want to install xen on this VT
> > > > > enabled machine on which windows xp is already.
> > > > >
> > > > >            Is there will be any effect on windows xp after
> > > > > installing xen on it. If there will be any effect what will
> > > > > be those. If anyone will have any information please reply,
> > > > > it will be grate for me.
> > > >
> > > > Well, you won't (successfully) be able to "install Xen on
> >
> > Windows".
> >
> > > > If you want to convert your machine to running Xen, you'll
> > > > have to also
> > > > install Linux, which will be your "host operating system".
> > > >
> > > > So let's presume that you have a free drive to install Linux
> > > > on and you
> > > > do this, you will then have to set Linux to be your primary
> > > > boot, instal
> > > > Xen on it (which is relatively easy if you go with one of
> > >
> > > the Linux's
> > >
> > > > that have Xen included from the beginning).
> > > >
> > > > Now you have Xen + Linux on the machine - and you could,
> >
> > in theory,
> >
> > > > start your Windows as a virtual machine (aka guest or
> >
> > DomU) on that
> >
> > > > machine. However, the hardwar that Windows sees will be
> > >
> > > different from
> > >
> > > > what the real hardware is, so drivers for hard-disk, network,
> > > > graphics,
> > > > sound etc, would have to be re-installed. It's very
> >
> > likely that the
> >
> > > > Windows you have on the machine at the moment would not
> > >
> > > boot with the
> > >
> > > > "new hardware".
> > > >
> > > > It's probably better to leave the machine in a dual-boot
> > > > mode, where you
> > > > have Linux and Windows installed in parallel, and then
> > >
> > > install Windows
> > >
> > > > AGAIN for use with Xen. That way, you don't get any
> > >
> > > hardware problems.
> > >
> > > > The best way to do this would be to use a physical device
> > > > (partition) as
> > > > your Windows install destination. That way, you could let
> > >
> > > your regular
> > >
> > > > "hardware" windows installation share documents by also
> > >
> > > mounting this
> > >
> > > > same partition.
> > > >
> > > > --
> > > > Mats
> > > >
> > > > > Thanks,
> > > > >
> > > > > Praveen Kushwaha
>
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