Error: NO BOOTABLE DEVICE

[Osvaldo Hablo]

I installed the Windows 2003 server on the qemu emulator. After the first
shutdown using VNC Viewer I can't get there. At first It started writing
that this port is not listenening. Then I entered command qemu-system-i386.
After that I was able to connect, but instead of Windows there was written
NO BOOTABLE DEVICE. The disk was virtual and it has not disappeared. How to
fix it? How can I start the system again?