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Right now we have:

( ) Use a downloaded Tails ISO image

Since we distribute USB image, ISO images are only advertized for DVD and virtual machines. To be consistent with both USB images and Tails Installer being for USB sticks only, it should accept USB images instead of ISO images.

It could also accept both USB images and ISO images and detect which is which. I don’t know how much more complicated this would be.

This feature of Tails Installer now only makes sense:

• To do a manual upgrade to the latest version: as a simpler way than GNOME Disks to create the intermediary Tails.

This is the manual upgrade scenario that we recommend as “more secure”, so it’s important. Endless upgrades will make it less common but it will still happens sometimes, for example when changing Debian version or when automatic upgrades break.

Right now, it’s better to keep documenting GNOME Disks for manual upgrade inside Tails because we want to avoid these people possibly getting confused about ISO vs USB images.

• To do a manual upgrade to another version: for example, someone upgrading a USB stick to a beta or testing version, with some Persistence on it (for testing).

My guess is that this is not so common.

• To install a new Tails: as a simpler way than GNOME Disks to create another Tails. This would only make sense when manipulating 2 different versions, for example when installing a new version from an old version or installing a beta or testing version. Otherwise people might just clone.

My guess is that this is not so common.