[Caliga]

when speaking in terms of computers and other electronic hardware the root is the bottom level. for example your computer has at the very least a C:\ drive that is considered the root, if you are in a folder like windows ( C:\Windows ) you are one level above the root. so if your card when connected to the computer is called K or G or V then you will be at the root when the only thing you see is ?:\ where ? is the letter assigned to your card.