Before we had just a [stub]. Now [Qubes-Whonix] [DisposableVMs]
are fully [documented] thanks to [contributions] by the
[community]. ([wiki history])
**What are DisposableVMs?**
Under the Qubes TemplateVM model, any changes made to a
TemplateBasedVM's root filesystem are lost upon reboot. This is
advantageous for several reasons: it allows centralized (and therefore
faster) updates for all applications (most) inside the root filesystem,
saves time and disk space.
However, certain directories are designed to persist between reboots in
order to store files and settings. These directories are stored in /rw/
and include /home/user as well as additional directories defined by
"[bind directory]" settings.
To ensure that all changes to the filesystem are discarded after a
session, Qubes offers [DisposableVMs]. When a DisposableVM is
shutdown, the VM is removed from Qubes and all related VM images are
deleted from the host filesystem.
**What is a Whonix-Workstation DisposableVM?**
As the name suggests, this is a [Qubes] DisposableVM template based
on the Whonix-Workstation. This allows [Qubes-Whonix] users to create
throw-away instances of their Whonix-Workstation.
**Why Should I Consider Using a Whonix-Workstation DisposableVM?**
* Are quickly generated;
* Are disposed of (deleted) when the user has finished browsing and
other activities in a single session; and
* Will not remember any of the user's activities across DisposableVM
sessions, unless customized.
The major benefit of this approach is that the Whonix-Workstation
DisposableVM can be created in order to host a single application
usually the Tor Browser mitigating the risk that a compromise of the
browser will affect any of your other VMs.
Critically, a Tor Browser exploit will not effect (poison) later
instances of the Tor Browser running in a subsequent DisposableVM
session, because the DisposableVM is always started in its original state.
**Can I Customize Whonix-Workstation DisposableVMs?**
Yes. For advanced users, the instructions include steps to create a
customized savefile that will remember specific changes, such as
personalized Tor Browser settings. Due to concerns over possible
fingerprinting issues, users should carefully read the wiki warnings
before proceeding on this course of action.
**Can I Easily Add DisposableVM Entries to the Qubes Menu?**
Not yet for Qubes R3.2 XFCE 4, but you can [edit existing DispVM start
menu entries] and [desktop shortcuts can be created].
**What Else Should I Know?**
Due to a few usability issues affecting anonymity, do not use
Whonix-Workstation DisposableVMs until:
* You understand Whonix-WS DispoableVMs are NOT yet amnesic; and
* Have carefully read and understood the available Qubes-Whonix
Alternatively, you may wish to wait for Qubes 4.0 before you start using
Qubes DisposableVMs, due to [significant enhancements] planned for
the later release.
_This blog post [was written] by [torjunkie]._
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