title: missing partition in server centos 6.1
body: <p>I used the command <code>df-h</code> on my centos 6.1
  here's the output</p>
  
  <pre><code>[root@localhost ~]# df -h
  Filesystem            Size  Used Avail Use% Mounted on
  
  /dev/mapper/VolGroup-lv_root
                         50G  2.3G   45G   5% /
  tmpfs                 5.9G     0  5.9G   0% /dev/shm
  /dev/sda1             485M   35M  425M   8% /boot
  /dev/mapper/VolGroup-lv_home
                        2.0T  199M  1.9T   1% /home
  </code></pre>
  
  <p>i found out that the hard disk is two terabyte. but when I used the command <code>cat /proc/partitions | more</code></p>
  
  <p>here's the output</p>
  
  <pre><code>[root@localhost sysconfig]# cat /proc/partitions | more
  major minor  #blocks  name
  
     8        0 4293656576 sda
     8        1     512000 sda1
     8        2 2146970624 sda2
   253        0   52428800 dm-0
   253        1   14417920 dm-1
   253        2 2080120832 dm-2
  </code></pre>
  
  <p>you could see on the first line. it is <strong>4396.7 GB</strong> . why is it i could only see is 2TB? how could i find my missing another 2TB and make it a partition.</p>
  
  <p>I also use the command <code>lsblk</code></p>
  
  <p>here is the output</p>
  
  <pre><code>[root@localhost ~]# lblsk
  -bash: lblsk: command not found
  [root@localhost ~]# lsblk
  NAME                        MAJ:MIN RM   SIZE RO MOUNTPOINT
  sda                           8:0    0     4T  0
  ââsda1                        8:1    0   500M  0 /boot
  ââsda2                        8:2    0     2T  0
    ââVolGroup-lv_root (dm-0) 253:0    0    50G  0 /
    ââVolGroup-lv_swap (dm-1) 253:1    0  13.8G  0 [SWAP]
    ââVolGroup-lv_home (dm-2) 253:2    0     2T  0 /home
  sr0                          11:0    1  1024M  0
  </code></pre>
  
  <p>using the parted /dev/sda i type the <code>print free</code> command</p>
  
  <p>here's the output</p>
  
  <pre><code>(parted) print free
  Model: DELL PERC 6/i (scsi)
  Disk /dev/sda: 4397GB
  Sector size (logical/physical): 512B/512B
  Partition Table: msdos
  
  Number  Start   End     Size    Type     File system  Flags
          32.3kB  1049kB  1016kB           Free Space
   1      1049kB  525MB   524MB   primary  ext4         boot
   2      525MB   2199GB  2198GB  primary               lvm
          2199GB  4397GB  2198GB           Free Space
  </code></pre>