Mount additional disk to VirtualBox image (centos 6)

1. shut down you virtual machine
2. open VirtualBox Manager
• choose you machine
• click Settings->Storage->SATA Contoller->icon Add Hard Disk
• click "Create new disk"
• choose format VMDK (Virtual Machine Disk) for example -> next
• choose Dynamically allocated for example -> next
• enter name, and choose size
• click Create
• click Ok
3. run virtual machine
4. > sudo fdisk -l
   
   Disk /dev/sda: 5475 MB, 5475663872 bytes
   4 heads, 32 sectors/track, 83552 cylinders
   Units = cylinders of 128 * 512 = 65536 bytes
   
      Device Boot      Start         End      Blocks   Id  System
   /dev/sda1               1       78125     4999984   83  Linux
   /dev/sda2           78126       79681       99584   83  Linux
   
   Disk /dev/sdb: 107.3 GB, 107374182400 bytes
   255 heads, 63 sectors/track, 13054 cylinders
   Units = cylinders of 16065 * 512 = 8225280 bytes
   
   Disk /dev/sdb doesn't contain a valid partition table
   • I added 100Gb disk that got name /dev/sdb
   • "Disk /dev/sdb doesn't contain a valid partition table" mean that you need to format this disk first
   • yum install gparted
   • run gparted (if you use graphical or see the manual)
     
   • choose you disk in right top corner dropdown
   • Device -> Create Partition Table -> choose ms-dos -> apply
     
   • right click on disk bar -> New -> +Add
   • right click on disk bar -> Format to.. -> choose ext3
   
   
5. > mkdir /mnt/mydisk
6. > mount -t ext3 /dev/sdb1 /mnt/mydisk
7. > cd /mnt/mydisk
8. > df 
9. to mount automatically on boot, add disk to /etc/fstab my /etc/fstb for example, i added last line
• LABEL=79d3d2d4  / ext4    defaults,noatime 0 0
  LABEL=e21a3e10  /boot ext3    defaults,noatime 0 0
  devpts     /dev/pts  devpts  gid=5,mode=620   0 0
  tmpfs      /dev/shm  tmpfs   defaults         0 0
  proc       /proc     proc    defaults         0 0
  sysfs      /sys      sysfs   defaults         0 0
  /dev/sdb1   /mnt/mydisk   ext3  defaults      0 0
10. DONE