[CentOS-virt] can't mount a bootable flash drive

[ToddAndMargo]

Hi All,

Scientific Linux 7.2

# rpm -qa \*kvm\*
qemu-kvm-1.5.3-105.el7_2.3.x86_64
pcp-pmda-kvm-3.10.6-2.el7.x86_64
qemu-kvm-common-1.5.3-105.el7_2.3.x86_64
libvirt-daemon-kvm-1.2.17-13.el7_2.3.x86_64

I can mount NTFS flash drives on my Windows virtual machines
by Add Hardware -> USB Host Device.  They work fine.

Except for one bootable Windows 7 Pro OEM x 64 USB flash drive
I use for installing Windows 7.  In Windows, under devices
I get a bang mark saying the device failed to start.

This same flash drive, when set as the bootable drive
does boot into the Windows 7 install dialog.

What am I doing wrong?

Many thanks,
-T


-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Computers are like air conditioners.
They malfunction when you open windows
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~