I have a Windows 10 laptop. While I want to use Linux based OS I don't want to partition my HD or remove Windows OS. So I thought of installing Ubuntu on a 64gb pendrive and running the OS from it. But is it possible to install 2 OS on same pendrive like Ubuntu + mint and have a choice everytime I boot? Also if I am running OS from a USB drive will I get full access? And where do I install all the softwares for Linux? Is it possible to do that on the pendrive itself? So that the pendrive can become my own personal little Hard drive which can turn any PC/laptop into my own with all my softwares, data and settings? Kind of like my whole c drive is on the pendrive and I can access other drives(data like videos, music,etc) from the computer's hard drive. And if I connect the pendrive to some other computer my c drive stays with me so all the work I do or data I save still stays with me when I go back to my PC. Plus OS is locked and always with me in my pocket so even if someone tries to use my laptop my data is safe with me.
It's possible. You can use too a Cloud Storage, Like Dropbox ou Google Drive to help.
You can use the Yumi to create the multi boot device. But you will not have persistent storage with it.
So you can use Universal USB Installer to create a single OS boot but with persistent storage. Then you will be able to install e configure your OS as you wish.
Using windows 10 you won't be able to access the C drive. You will need to disable Windows Quick Boot. I am not able to show you the link, but you will have to search for it.