How to Re-Add Virtual Machines in VirtualBox

In this article, we will examine the steps to re-add the virtual machines used on the old version of Oracle VM VirtualBox to the new version.

How to Re-Add Virtual Machines in VirtualBox

How to Import an Existing Virtual Machine into VirtualBox

When you update the Oracle VM Software, or when you setup VBox after installing a new system, the virtual machines you installed will not be automatically added to the program.

To add VirtualBox to previously installed VMs, you need to export the machines. Once you have exported the machines, you can easily add your previous configuration to VBox with Import.

However, if you have not exported the VMs and want to re-add the machines, you can resolve this problem once you have completed the stages in this article.

To re-add the VMs you installed previously to VBox, you have to add them as if you were installing a new virtual machine with Oracle software.

How to Reinstall Virtual Machines to VirtualBox

Follow the stages below in order to add the virtual computers that you have previously installed on your Hard Disk or an external disk.

   Step 1

When you update your Oracle VBox program or setup it on a new computer, you may see the following image that the machines are not added automatically.

The VMs installed with VBox are listed in the left panel as follows.

Oracle VM VirtualBox Virtual Machine Panel

   Step 2

Open the location of the VMs previously installed with VBox. For example, you can double-click on the Windows 7 VM and see that it is not automatically added to the Oracle VBox program.

Windows 7.vdi File

   Step 3

If we try to add the VM by dragging and dropping it, the operation will not be successful.

Drag and Drop Windows 7.vdi File to VirtualBox

   Step 4

Therefore, you can add VMs installed by creating a new VM. From the menu, click on the New button and select the VM name and version.

Then click on the Next button to continue.

Creating a New Virtual Machine in VirtualBox

   Step 5

You can set the RAM size for the VM you added in the following window. For Windows 7 VM, 2 GB of RAM value will suffice. After specifying the RAM size, click on the Next button.

Allocating RAM Value to VM

   Step 6

This action is the most important. You can select the Use an existing virtual hard disk file option as shown below and click the Browse button.

Use an Existing Virtual Hard Disk File

   Step 7

In the window that opens, select the Windows 7.vdi VM hard disk file and click the Open button.

Selecting Windows 7.vdi

   Step 8

After adding an existing VM to Oracle VBox, click the Create button.

Use an Existing Disk

   Step 9

After the VM is added to the panel, click the Start button to run the VM. As you can see in the following image, the Windows 7 VM is functioning properly.

Start Virtual Machine

   Step 10

If you have updated your VBox program, you must update the Guest Additions after adding the VM to the program.

From the Windows 7 VM menu, click Devices and then select the Insert Guest Additions CD image option.

Insert Guest Additions CD image

   Step 11

Continue by clicking the Next button in the Guest Additions setup window.

Guest Additions Setup Wizard

   Step 12

Leave the guest extensions setup location in the default location and click on the Next button.

Choose Install Location

   Step 13

Click the Install button to start updating the guest additions for the VM.

Choose Components

   Step 14

After updating the guest extensions, restart the VM.

Reboot Now

   Step 15

We have updated the Windows 7 VM guest additions from 5.1.3 to 5.2.6.

Guest Software Version

How to Import a VM ⇒ Video

You can watch the following video to import VMs onto VBox and subscribe to our YouTube channel to support us…

   Final Word

In this article, we have examined how to re-add the machines used in the Oracle VBox to the program. Thanks for following us!

   Related Articles

How to Install VirtualBox in Windows 10
How to Backup VM using Clone
♦ How to Install VirtualBox on Ubuntu 17.10
♦ How to Upgrade VirtualBox on Windows 10
♦ How to Install Windows 7 in Oracle on Windows 10

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