I do not think you can install Trisquel on the USB drive where the running
live system is, if that is what you are trying to do. Notice that running
your main system from a USB key is not a good idea: such a peripheral does
not support many rewrites and some files (e.g., the logs in /var/log) are
very frequently written. To install it alongside Windows (for a start), make
some space on the internal disk, defrag Windows and follow these
instructions:
https://trisquel.info/en/wiki/install-trisquel-windows-dual-boot-0
If you chose to have permanent storage on the USB key, then what you do
during a live session is persistent. That includes the installation of
packages. Of "hunspell-en-us" for instance. It is an American-English
dictionary that Abrowser can use to spell-check (right-click in a text box,
and point "languages"). Notice however the existence of a tool to install in
one click all packages localizing/internationalizing your programs: "Language
Support" in the "System Settings". It is not normal videos play with no
sound. Do you have any sound at all? See "Sound" in the "System Settings".
You can modify (or even delete) Windows files from Trisquel (installed or
live system). But that would be a voluntary action on your part though.
Well, do not learn command lines practicing inside a Windows folder!
About the translator you found, it looks like it is only an interface to an
online (dis)service, hence still SaaS. Also I am not sure it runs on
GNU/Linux and even if it does, it would be running on top of Mono, what is
risky: https://www.fsf.org/news/dont-depend-on-mono
Apertium, in Trisquel's repository, is an offline automatic translator.
