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Enlarge a Virtual Disk in VirtualBox - Knowledgebase / General - CTSi Group - Helpdesk

Enlarge a Virtual Disk in VirtualBox

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To enlarge a virtual disk in VirtualBox, you’ll need to use the VBoxManage command from a Command Prompt window. First, shut down the virtual machine – ensure its state is set to Powered Off, not Saved.


From a command prompt:  cd “C:\Program Files\Oracle\VirtualBox”


The following command will operate on the VirtualBox virtual disk located at “C:\Users\Test\Virtual HDDs\Win7Box\Windows 7.vdi”. It will resize the virtual disk to 81920 MB (80 GB).

VBoxManage modifyhd “C:\Users\Test\Virtual HDDs\Win7Box\Windows 7.vdi” --resize 81920

Please note: There must be a space before the --resize


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