When starting Tails from an external hard disk or problematic USB stick, Tails might return the following error message:

Unable to find a medium containing a live file system

In such cases, remove the live-media=removable boot option. To do so, see our instructions on modifying the boot options using the Boot Loader.

Removing the live-media=removable boot option might be dangerous. If an adversary had access to the computer and installed a malicious Tails on the internal hard disk, the computer might start on the malicious Tails instead of on the USB stick.