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Category: VMware
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I am trying to install VMWare Workstation on a host running on a Windows 7, when I encountered this error:

Does anybody know why I got this error? Are there any workarounds so I can finally install it? I would appreciate if someone can help me here. 

VirtualBox - Error
Failed to open the hard disk
/media/sdal/giannis/sonicstage.vdi.
Cannot register the hard disk
/media/sdal/giannis/sonicstage.vdi' with UUID
{900334af-3cfe-4052-8976-7303b5898465}because a hard disk '/media/sdal/giannis/winxp.vdi' with UUID
{900334af-3cfe-4052-8976-7303b5898465}already exists in the media registry
('/home/giannis/.VirtualBox/VirtualBox.xml').
 

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Hi Amanda Wissler,

VMWare keeps a unique id for all the hard disks it maintains. I thinks you already have a hard disk with the same UUID in your computer. To solve this problem you just have to regenerate the unique id. To do this just follow the steps,

  1. Open 'Command Prompt' window
  2. Go to the directory where the VirtualBox is installed
  3. Then type as " VBOXMANAGE.EXE internalcommands sethduuid <Path of the hard disk> " (in your case "/media/sda1/glannis/sonicstage.vdi)
  4. Press Enter & thats it.

You should be getting a window similar to this one :

Hope this solves your problem :)