SETTING PARTITION IN CENTOS

#lsblk   (to view all partitions available)

This will list the available space

  

#fdisk /dev/sdc

(Select n

Then p for primary e for extended

Give size

w for save)

similarly we can create multiple number of partition based on requirement.

Then we need to assign a file system to the created partition.Here we are assigning ext3 file system. 

#mkfs -t ext3 /dev/sdc

Now create mount point.ie,the directory to which we want to mount

#mkdir /disk

Open fstab file inorder to permenently mount a file system.

#vi /etc/fstab

Here we gave details about

UUID  mountpoint  filesystem defaults 0 0

(note:here fst zero indicates wheather disk is to be backed up.0 indicates no

Second 0 indicates wheather fscheck is needed or not.0 means no fscheck.

We can give these value no issue in it)

To know the UUID blkid command can be used

#blkid /dev/sdc1

After editing fstab file run partprobe command to reload partition table

#partprobe

Type the followinng command to mount it.

#mount /dev/sdc1 /disk

Now

#df -h will give details about our mounted partition

FOR DELETING THE DISKS

# fdisk /dev/hdb
Command (m for help): p
Command (m for help): d
Partition number (1-4): 1

Verify that partition deleted:
Command (m for help): p
Now save the changes and exit to shell prompt. Type the w command:
Command (m for help): w

Also remove entries from /etc/fstab
Now reboot the system
#reboot