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You can see that my virtual disk is now 10GB in size.

Once your added your virtual disk back, you can check out the new size of it. Click the plus icon, and select Add Hard Disk.Ĭhoose your enlarged virtual disk. Now open your virtualbox settings to attach the virtual disk back to your virtual machine. You can’t make your virtual disk smaller using this command. vboxmanage modifyhd "/home/matrix/VirtualBox VMs/ubuntu/ubuntu.vdi" -resize 10240 For instance, I entered the following command to increase my virtual disk to 10GB.

The syntax is as follows: vboxmanage modifyhd /location-of-your-virtual-disk -resize size-in-MB Now you can use the vboxmanage comand to enlarge your virtual disk. Increase Virtualbox Disk Size For Dynamically Allocated Disks

Make sure your backup disk name is different from the origial disk name. Note that because the location of my virtual disk contains space, so I added double quotes around the location. For example, I executed this command: cp "/home/matrix/VirtualBox VMs/ubuntu/ubuntu.vdi" "/home/matrix/VirtualBox VMs/ubuntu/ubuntu-backup.vdi" Repalce the location with the real location of your virtual disk. cp /location-of-virtual-disk /location-of-backup-of-virtual-disk Next open up a terminal on your host OS and run the following command to backup the virtual hard disk. Then click the minus icon to remove the virtual disk from virtual machine. You can see that my virtual disk is dynamically allocated.īefore we increase the size of our virtual hard disk, it’s always a good idea to make a backup of it in case something go wrong.įirst, right click on the location line and copy the location of your virtual hard disk. You can see the information about your virtual disk on the right. Select your virtual disk under Storage Tree. Open you virtual machine settings and click Storage on the left pane. Find Out If Your Virtual Disk is Dinamically Allocated If you want to know how to increase the size of a fixed size disk, then read the next article. I also assume that your host OS is Linux. This method will only work if your virtual disk is in. In this tutorial, I’m going to show you how to increase Virtualbox disk size for dynamically allocated storage.