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When creating a new virtual machine, r the Boot Options page includes an Attach CD option that enables the user to specify an ISO for booting (for operating system installation). If the user selects the checkbox and there are no entries in the drop-down list, as shown in Figure 117, there are no ISOs are available in any storage domains.
Figure 117. Attach CD
To resolve the issue, follow the instructions in Image upload. The user can also specify boot options at the time of initial power on of the virtual machine. Make sure to clear the Attach CD check box, otherwise OVM generates an error.