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RE: [Xen-users] block attach in windows HVM guest

To: "Adam Goryachev" <mailinglists@xxxxxxxxxxxxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] block attach in windows HVM guest
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Fri, 13 Aug 2010 11:21:18 +1000
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Thread-topic: [Xen-users] block attach in windows HVM guest
> On 13/08/10 10:36, Alexandre Chapellon wrote:
> > Hello,
> >
> > I'm facing a quite starnge issue.
> >
> > I am using Xen 3.2.1 that is bundled in debian Lenny.
> > Unfortunately in the cdrom never appear in the windows explorer whereas
> > the windows device manager show up a new Xen Black Device driver. Even
> > further, if I have to detach the block device. Windows guest pops up
> > telling me that the device (that I can't see) can now be removed.... :/!
> > If I add the config informations in the config file and recreate the
> > guest... the CDRom appear at boot time. But of course reboot is not an
> > acceptable way of mounting a cd, even for a windows user! :)
> >
> > Does anyone has ever faced that? Or nay idea?
> The only method I found that worked was to ensure the device exists at
> boot time, then you can change the CD at any time without a reboot.
> Though I also found very strange behaviour within windows if I tried to
> 'remove' the CD by pointing it to /dev/null.... Perhaps it would be
> better to create a "blank cd" ie, an iso file with no files in it to use
> as the bootup iso file. This was with windows 2008R2 and debian lenny xen...
> PS, the only other option I can think of is you might need to manually
> allocate a drive letter in windows before it will show up in My Computer...

If you are using GPLPV then you won't have much luck with CD's under 3.2.1. 
Later versions of Xen allow qemu to disable the emulated harddisks but leave 
the emulated cdrom which allows things to work a lot better.

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