Why does the computer shows that " unable to insert the virtual optical disk " when i follow the instructions in the prerequisites chapter, which says,"Click “Devices” -> “Insert Guest additions CD image” in the menu bar"


#1

why does the computer shows that " unable to insert the virtual optical disk " when i follow the instructions in the prerequisites chapter, which says,“Click “Devices” -> “Insert Guest additions CD image” in the menu bar”


#2

is the virtual machine itself turned off? can you provide some screenshots?