How to mount space in /dev/sda2

Question

I have EC2 instance running, executing command df -h in the putty i get the following result

Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1             9.9G  9.4G   11M 100% /
tmpfs                 854M     0  854M   0% /lib/init/rw
varrun                854M   80K  854M   1% /var/run
varlock               854M     0  854M   0% /var/lock
udev                  854M  104K  854M   1% /dev
tmpfs                 854M     0  854M   0% /dev/shm
/dev/sda2             147G  188M  140G   1% /mnt

It shows that I am running out of space in /dev/sda1, but have 140G free space in /dev/sda2. I am new to linux and EC2 hosting, so can you please solve my following queries

1. What is /dev/sda1 and /dev/sda2 ??
2. How can i utilize the space in dev/sda2 ??
3. How to know total how much space I have ???

Solution

/dev/sda1 and /dev/sda2 are descriptors for filesystems. In order to have those filesystems available to you in linux, they have to be mounted to a specific location (/dev/sda2 is mounted as /mnt, for example). Anything you put in the /mnt directory will be stored on /dev/sda2 and will count against the 147G of space you have available there.

You are already aware of df -h - this is what I use to tell how much space I have available.

Comments

[alexanderzhirov]

Your answer is good but as a new bee i am little afraid of performing all this task but i can do as calman suggest storing some backup files in /mnt.. thanks