If it were possible to use the same USB stick with another operating system, for example to store files to use on Windows, a virus in the other operating system could corrupt your Tails.
To store files in your TailsUSB stick, use the [[Persistent Storage|doc/persistent_storage]]. To exchange files between Tails and another operating system, use a separate USB stick.
<h2 id="upgrade">Should I update Tails using <code>apt upgrade</code> or <i>Synaptic</i>?</h2>
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It is notimpossible to verify the integrity of a Tailsdevice, USB stick or DVD, whilen running Tails from this same device. Thisit. It would be like asking to someone whether she is a liar; the answer ofthey are lying: a true liar would always be "no"pretend to tell the truth.
It is impossible to verify the integrity of a TailsUSB stick or DVD while running Tails from it. It would be like asking to someone whether they are lying: a true liar would always pretend to tell the truth.
Many websites today require JavaScript to work correctly. As a consequence JavaScript is enabled by default in Tails to avoid confusing many users. But *Tor Browser* takes care of [[blocking dangerous JavaScript functionalities|doc/anonymous_internet/Tor_Browser#javascript]].
Tor Browser also includes a [[security level|doc/anonymous_internet/Tor_browser#security-level]] and the [[NoScript|doc/anonymous_internet/Tor_browser#noscript]] extension to optionally disable more JavaScript. This might improve security in some cases. However, if you disable JavaScript, then the [[fingerprint|doc/anonymous_internet/Tor_Browser#fingerprint]] of your *Tor Browser* differs from most users. This reduces your anonymity.