boot=on option fails on win 2k/xp double boot

[Federico Fissore <federico.fissore@xxxxxxxxxxxx>]

I've a windows (virtual) box with windows xp originally installed and a 
windows 2k lately installed

If I run kvm from the command line for testing purposes everything is 
fine. If I run it with libvirt on the host, I does not boot, complaining 
with an I/O error

the problem arises since libvirt adds boot=on on the first disk

without that option, everything works fine

do you have any hint on this?

thanks

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