Ubuntu - VirtualBox - Setup - Add a new hard drive to Ubuntu VM

Environment:

OS: Ubuntu 14.04 guest VM
VirtualBox: 4.3.6 on Windows 7 host




Add a hard drive in VirtualBox:

1. Go to VirtualBox Manager
2. Select the VM where drive needs to be added and click 'Settings' (ctrl+S)
3. On settings dialog, click on 'Storage' from left navigation panel. 'Storage Tree' and 'Attributes' will be shown at right side (see Pic-01)
4. Under 'Storage Tree', select 'Controller: SATA', 'Add CD/DVD Device' and 'Add Hard Disk' icons will be displayed (see Pic-01)
5. Click on 'Add Hard Disk' (see Pic-01)

6. 

   Pic-01: Settings dialog box

7. Click on 'Create New Disk' on popup (see Pic-02)

   

   Pic-02

8. Select 'VDI - VirtualBox Disk Image' and Click Next

   

   Pic-03: HDD file type

9. Select hard drive file type and click Next

   

   Pic-04: Storage on Hard drive

10. Specify file lcoation and size and click Create. It will take few minutes to finish. 

Make the hard drive available in Ubuntu:

1. Check drives
   Command: "sudo fdisk -l"
   Output:Disk /dev/sdb: 107.4 GB, 107374182400 bytes255 heads, 63 sectors/track, 13054 cylinders, total 209715200 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000Disk /dev/sdb doesn't contain a valid partition table
2. Create partition
   Command: "sudo fdisk /dev/sdb"
3. type 'n' to create partition
4. Next select partition type p=Primary, e=Extended
5. Specify number of partitions
6. I had to create two partitions. For me next two options were to specify first sector and last sector where I selected default.
7. 'w' to write the changes
8. 'q' to quite fdisk
9. Update kernel with changes
   Command: "sudo partprobe /dev/sdb"
10. Format hard drive
    Command: "sudo mkfs /dev/sdb2 -t ext4"
11. Create a directory for mount point. Following convention to create under /mnt
    Command: "sudo mkdir /mnt/sdb2"
12. Make the folder writable
    Command: "sudo chmod 777 /mnt/sdb2"
13. Mount drive to folder
    Command: "sudo mount /dev/sdb2 /mnt/sdb2 -t ext4"