The machine will not be able to boot unless you attach a hard disk with a guest operating system or some other bootable media to it later using the machine settings dialog or the First Run Wizard. This wizard will help you to perform the steps necessary for installing an operating system of your choice onto this virtual machine. Zoom in the map over the dark area in the upper right corner of the image which is a water body. All other changes will be lost if you close this window now. Therefore, click RUN to edit the raster.
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