When comparing Slax vs SeaBIOS & Kali Linux, the Slant community recommends Slax for most people. In the question“What are the best portable operating systems?” Slax is ranked 11th while SeaBIOS & Kali Linux is ranked 15th. The most important reason people chose Slax is:
Changes you make in the configuration persist if you run from USB.
Specs
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Pros
Pro Persistent changes
Changes you make in the configuration persist if you run from USB.
Pro Pretty fast to boot up
It was considerably fast to turn on when booting from cd.
Pro Modules
Standard tar archives plus some simple shell scripting produces modules that you can load dynamically into the OS for added apps and functionality.
Pro Modern desktop
Pro Small footprint
About 200mb, but with a full KDE4 environment and loads of useful apps.
Pro Gives you the full power of Linux
in going with this method, you will get the full power of Kali Linux (or your distribution of choice) depending on your model of chrome book the driver support may vary. You will have to research your model of chrome book and Linux distribution of choice to verify everything will work out of the box.
Cons
Con Overly complicated HDD/SSD installation
While it has a nice layout Slax's lack of an installer tool like Tinycore's just can't be justified. It seems strange that it comes built in with programs that some users may not want, yet it doesn't have an easy way to install it. Due to its heavier use of RAM, built in software, and lack of an installer its hard to choose it over TC.
Con Works slowly on old computers
Con Infrequent releases
Since Slax is maintained by only one person, releases are not that frequent. So it may take a while to get bug fixes or new features once you start using it.
Con You will void the warranty in most cases
Almost all of the official google chrome-books (See C720 series for an example) have a hardware write screw to protect the BIOS, To install SeaBIOS you will have to remove this screw, and in doing so you will void the warranty on your chrome book.
Con Removes Chrome operating system
If you go this route, you will lose access to the chrome os. It is not possible to dual-boot chrome os and GNU/Linux. Therefore if you would like to have the possibility of using chrome os in the future you will need to make a backup of the operating system.