DisposableVM is persistent

[StonecipherB]

Hi there,
I recently upgraded my default templates to Fedora 33. I followed these instructions to create a disposable VM template from Fedora 33:

DisposableVM Customization

The template shows up in the Qubes menu, as “Disposable”. But when I launch it, instead of creating a “DispXXX” instance, it launches as “fedora-33-dvm” and remains persistent: if I open a web page, close the VM, then re-open it, Firefox offers to restore the session.

How can I make the DisposableVM nonpersistent?

Thank you!

[deeplow]

@StonecipherB

The template shows up in the Qubes menu, as “Disposable”. But when I launch it, instead of creating a “DispXXX” instance, it launches as “fedora-33-dvm” and remains persistent: if I open a web page, close the VM, then re-open it, Firefox offers to restore the session.

This is stange. By default it should open the a [dispXXXX] qube based on the DisposableVM Template, when you open it via the Qubes menu.

@StonecipherB

How can I make the DisposableVM nonpersistent?

Although I was unable to reproduce it, I get the idea that that it could be related to missing the following step from the instructions you mentioned.

Additionally, if you want to have menu entries for starting applications in disposable based on this app qube (instead of in the app qube itself), you can achieve it with appmenus-dispvm feature:

[user@dom0 ~]$ qvm-features fedora-26-dvm appmenus-dispvm 1

Note: application shortcuts that existed before setting this feature will not be updated automatically. Please go the the “Applications” tab in the qube’s “Settings” dialog and unselect all existing shortcuts by clicking “«”, then click “OK” and close the dialog. Give it a few seconds time and then reopen and re-select all the shortcuts you want to see in the menu. See this page for background information.

@StonecipherB Can double-check that you did that?

[StonecipherB]

Thank you! I had run the command during the install, but it seemed not to have worked - I ran it again and now the machines are truly disposable rather than persistent. Thank you so much.