This is because, in Tails, *Tor Browser* is confined using *[[!debwiki AppArmor]]* to protect your files from some types of attacks against *Tor Browser*.
For example, thanks to this confinement, even if an attacker manages to exploit a security vulnerability in *Tor Browser*, they wouldn't be able to access all the content of your Persistent Storage.
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<p>This is why, for example, you might face <em>Permission denied</em> you get the following errors if you try to download files tothe <em>Home</em> another folder.:</p>
If you want to download a file from *Tor Browser*, save it to one of these folders.
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-If you want to upload a files with <span class="application">Tor from *Tor Browser</span>, copy them to that folder first. *, copy it first to one of these folders.
<p>To prevent Tails from running out of memory and crashing, download very big files to the <em>Persistent/Tor Browser</em> folder. All the files that you download outside of the Persistent Storage are stored in memory (RAM), which is more limited.</p>
It is impossible to hide to the websites that you visit that you are using Tor, because the [list of exit nodes of the Tor network is public](https://metrics.torproject.org/exonerator.html).