One of the great things that Gnu / Linux brought us a long time ago is the possibility of having a complete operating system on a pendrive, although this was possible, it was an arduous task until Ubuntu arrived. Ubuntu offered the possibility of carrying out this task but with a graphical tool.
This has been remarkably improved with Linux Mint, which was released a long time ago. Mintstick, a program that created the distributions that you want in the usb that we indicate. Thus, in a graphical way, the user can install several distributions on a single pendrive. MintStick is maintained by Lefevre himself, the head of distribution, so security and maintenance are ensured. Also, MintStick is on github so we can install the tool in any distribution based on Debian, not only in Linux Mint but in more distributions.
Mintstick will allow us to carry out distribution installations on equipment that does not have an optical unit
This tool is useful when recovering a system or carrying your own operating system on a pendrive to use on any computer with questionable security.
The little problem with MintStick is that unlike other tools, MintStick does not offer persistence, so we will not be able to save our data to the usb. The persistence means that all the free space of the pendrive can be used as a hard disk for the distribution inserted in the usb. So once we finish the session we can recover the saved data. But the fact that it does not offer persistence is not a problem for Mintstick users since we can use it as a tool to create installation discs on a pendrive and install any Gnu / Linux distribution on any computer that does not support discs or dvd's due to various problems. This feature on older computers still works very well.