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I have an Ubuntu OS on a separate HDD. Is it possible to load that Ubuntu system with full Desktop GUI within my current running Ubuntu machine?

I look for something like

  • chroot but full desktop access rather than shell only.
  • VirtualBox but loading Ubuntu from its standard folders (e.g., a bootable USB stick) rather than an image.
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  • What exactly are you trying to achieve by doing this? There might be a better way to accomplish it.
    – user535733
    May 10 '20 at 4:40
  • You should be able to boot that drive in VirtualBox. It is along the same lines as an answer I wrote a while back where you create a raw vmdk that points to your other Ubuntu drive. See: askubuntu.com/a/693729/231142
    – Terrance
    May 10 '20 at 4:40
  • @user535733 I want to be able to access my old Ubuntu machine (now on a separate disk) while using the current one.
    – Googlebot
    May 10 '20 at 4:54
  • "Access" implies you just want your data. That's easy; takes a few minutes to learn. Running a bootable USB stick or .iso using KVM will take you about a half-day to learn. Booting a complete GUI from a different installed partition on your hard drive using KVM will take you most of a day. Look up any of the many KVM tutorials to get started. You could also use VirtualBox or LXD 3.0 or higher if you are already familiar with them.
    – user535733
    May 10 '20 at 5:16
  • MultiBootUSB, multibootusb.org, has an option to run Live USB sticks from within Windows or Ubuntu. Not sure it is working with 20.04 yet. May 10 '20 at 5:37

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