I have set a windows 10 OS in Oracle VM virtualbox, about not being full screen issue, I have downloaded and installed Guest Additions, now I can make it full screen.
My question is, because I am done with it, I want to remove the .iso from the virtual disk, however, it displays a warning, which I don't relate to the situation.
So, I want to know if it is something I should not do or not.
11 Answer
You're a not ejecting the virtual CD (the ISO) from the virtual optical drive, but your are removing the entire optical drive itself from the virtual machine.
If that is what you intended to do, fine, but most people do that by accident and that is why VirtualBox gives that warning.