How to copy or reuse a .vdi virtual disk in VirtualBox (error: UUID already exists)

Problem:

You copy a .vdi file (virtual disk) and you get an error when create a new Virtual Machine in Virtual Box using this .vdi file.

Result Code:
NS_ERROR_INVALID_ARG (0x80070057)
Component:
VirtualBoxWrap

Solution:

To solve it, you can assign another UUID or clone the file using the VBoxManage tool.

Step by step:

Option 01
You have copied the vdi file.

1. Open a Terminal.
2. Type in the command as the following:

   VBoxManage internalcommands sethduuid "/path/to/myDisk1.vdi"
   

   Example:

   VBoxManage internalcommands sethduuid "/home/rogelio/VirtualBox VMs/myDisk1.vdi"
   

Option 02
You want to re-use the .vdi file. You should clone the file.

1. Open a Terminal and type:

   VBoxManage clonevdi myDisk1.vdi cloneDisk.vdi
   

Source:

https://tecadmin.net/change-the-uuid-of-virtual-disk/