root is the user name you are working with
DESKTOP-9R2GIKO is the host name
The output you are getting from
ls is the content of
/ (root) in your file system hierarchy.
To make sure where you are you can run:
pwd, it should return:
To find out what each directory in
ls output is contain and responsible of run:
For example it states that:
/ This is the root directory. This is where the whole tree starts.
To make sure about the meaning of
root@DESKTOP-9R2GIKO you can run:
echo $PS1, you should get an output containing/similar to:
Pay attention to
\u is username,
@ is a literal and
\h is your host name.
If you run
cat /etc/hostname you should also get: