Increase virtualbox Virtual Disk size

1. Create a virtual disk of sufficient size.

2. Attach the original (SDA) and new (SDB) disks to the media of the VM.

3. Mount Ubuntu live CD in the Virtual Machine and start

4. Run the DD command to clone a disk. dd BS = 64 m if =/dev/SDA of =/dev/SDB

5. Use the gpart tool to adjust the position and size of the SDB before applying the SDK.

6. Use the new SDB.

 

Reference: http://www.giannistsakiris.com/index.php/2007/11/25/how-to-enlarge-a-virtualbox-disk/

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Virtual box 4.0 or later, just run

Vboxmanage modifyhd your_hard_disk.vdi -- resize size_in_mb