The iDRAC Enterprise card enables a user to mount remotely-shared disk-images as if they were connected to the system. In combination with the remote console, this gives administrators the ability to completely reinstall an operating system, a task which traditionally required local console access to the physical machine. Administrators can control virtual media through the browser.
If you continue to experience issues with your Operating System reinstallation, you are welcome to submit a support ticket. Reinstallation requests are usually honoured within 12 hours.