If you start Tails from a USB stick or SD card, you can create a persistent volume in the free space left on the device by Tails Installer. The files in the persistent volume are saved encrypted and remain available across separate working sessions.
It is only possible to create a persistent volume if the device, USB stick or SD card, was installed using Tails Installer.
This requires a USB stick or SD card of at least 4 GB.
You can use this persistent volume to store different kinds of files:
- your personal files and working documents
- the software packages that you download and install in Tails
- the configuration of the programs you use
- your encryption keys
The persistent volume is an encrypted partition protected by a passphrase.
Once the persistent volume is created, you can choose to activate it or not each time you start Tails.
The use of a persistent volume in a system which is designed to provide
anonymity and leave no trace is a complicated issue.
Read carefully the warning section.