Description of problem:
Windows guest won't run with no CD in drive.

Version-Release number of selected component (if applicable):
Fedora 11 Beta

How reproducible:
Every time

Steps to Reproduce:
1. Create a Windows guest
2. Remove CD from drive
3. Attempt to start guest
  
Actual results:

Guest doesn't start.

Error starting domain: internal error unable to start guest: qemu: could not open disk image /dev/sr0

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/engine.py", line 493, in run_domain
    vm.startup()
  File "/usr/share/virt-manager/virtManager/domain.py", line 573, in startup
    self.vm.create()
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 287, in create
    if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: internal error unable to start guest: qemu: could not open disk image /dev/sr0


Expected results:
Guest starts.

Additional info:
I have run into this before in earlier versions of Fedora. Suggest either modifying the code so that a Windows guest can start with no CD in the drive or adding additional explanation to the error message telling people what the problem is and what they can do to correct it (either disconnect the CD in the VM manager or insert a CD in the drive.)