Raspberry Pi SD card not mounted : Ubuntu

Question

I am very new to raspberry Pi, I have performed initial connections like connecting microusb and Ethernet cable to my computer and raspberry pi device , I use 16GB SD card, but when i check the devices mounted on my computer i could not see if my SD card is mounted , unfortunately i could not see any thing mounted in my computer

I am using Ubuntu 16.04 LTS , kindly suggest me any possible reason why i am facing this issue

dev@dev-Compaq-15-Notebook-PC:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            1,7G     0  1,7G   0% /dev
tmpfs           340M   10M  330M   3% /run
/dev/sda2       455G   35G  398G   8% /
tmpfs           1,7G  2,2M  1,7G   1% /dev/shm
tmpfs           5,0M  4,0K  5,0M   1% /run/lock
tmpfs           1,7G     0  1,7G   0% /sys/fs/cgroup
/dev/sda1       511M  3,6M  508M   1% /boot/efi
cgmfs           100K     0  100K   0% /run/cgmanager/fs
tmpfs           340M   88K  340M   1% /run/user/1000

The model that i have is Raspberry pi 3

Answer 1

As I pointed out in the comments, inserting an empty SD card into a Raspberry Pi and trying to access that SD card via USB or LAN from a different computer is not going to work. The Raspberry Pi is a computer of its own and you wouldn't be able to access a hard drive in a regular computer with no operating system either. What you'll have to do is set up the SD card befort inserting it into a Raspberry Pi.

There are several ways of setting up a Raspberry Pi SD card, but all of them start with inserting the SD card into a computer using a SD card reader (many notebooks have them built in). That way, you'll be able to access the card like a regular flash drive.

Once you have access to the SD card, the easiest way to start is by downloading NOOBS and putting it on your SD card (you can follow this tutorial by the official Raspberry Pi Foundation).

Once you have done this, you can insert the SD card into your Raspberry Pi and start it for the first time (if you use NOOBS, you need to attatch a display).

To access it remotely (e.g. from a different computer in the same network), you can use SSH (following this tutorial, again provided by the official Raspberry Pi Foundation).