How to expand VirtualBox's Virtual Hard DiskJanuary 05, 2014
As mentioned in the first article, it's important to understand the prerequisites.
- Make sure you have the VBoxManage command-line tool installed on your host system.
- Download the ISO for a GParted Live CD or else a Linux Live CD using a Linux distribution that includes the GParted partition editor utility.
- IMPORTANT: If the virtual disk you want to resize is attached to a virtual machine with snapshots, you will need to delete these snapshots so that all disk state information is merged into the base virtual disk VDI file.
I was using VirtualBox 4.3.4. And, I partitioned the virtual hard disk by using GParted. Somehow, Linux Live CD didn't work for me. As indicated deleting snapshots is mandatory to proceed further. It may take a while based on the number of snapshots you have.
Resize Virtual Disk Using Command Line:
As my host system was windows, I ran the following commands to expand the disk size. Syntax of the commands will vary based on the host system.
cd "C:\Documents and Settings\myusername\.VirtualBox\HardDisks"
"C:\Program Files\Oracle\VirtualBox\VBoxManage.exe" modifyhd OldDisk.vdi --resize 30000
Expand the partition in the resized virtual disk:
I found reference#2 very helpful in this regard. The goal is to migrate the newly created space to precede swap partition.
- Resize your extended partition to include free space
- Move the swap partition (linux-swap) to the end of extended partition
- Shrink (Resize) the extended partition to just fit linux-swap. At this point you can see the unallocated space lying between primary partition and extended partition. As author suggested, apply your steps now.
- Now, resize the primary partition to include the unallocated space. Apply your steps.
|Resize your extended partition to include free space (partition in between ext3 and unallocated)|
|Move the right arrow until Free Space Following becomes zero|
|Click resize/move button|
|Move the swap partition (linux-swap) to the end of extended partition|
|Move the entire linux-swap block to the end block (until free space following is zero. New size remains the same)|
|Shrink (Resize) the extended partition to just fit linux-swap|
|Move left arrow until Free Space Preceding becomes zero|
|Apply your steps before going forward|
Resizing of virtual disk is complete.
- Re-sizing A Virtual-box Virtual Hard Disk http://trivialproof.blogspot.in/2011/01/resizing-virtualbox-virtual-hard-disk.html
- Expand a Linux Disk with Gparted http://blog.mwpreston.net/2012/06/22/expanding-a-linux-disk-with-gparted-and-getting-swap-out-of-the-way/ (All the images in this post are from this blog)