On Fri, Nov 15, 2013 at 01:02:10AM +0500, Umar Draz wrote:
> Hi
>
> I am working with php-libvirt,
>
> How I can find the primary or bootable disk device of a virtual machine?

This can be determined from the XML config. Either there will be a
<boot dev='cdrom|disk|floppy'> device type listed under <os> in which
case it'll use the first matching devices of that type, or there will
be explicit <boot order="NNN"/> ordering listed under the specific device


Daniel
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