How do I run Linux Mint or ubuntu from a flash?

How would I run Linux at school from my flash drive? I'm not trying to "install" it because they use a software called deepfreeze that would automatically delete it when the PC is restarted, instead what I want to do is run the OS right off the drive and be able to save text files on the os also. Thanks !How do I run Linux Mint or ubuntu from a flash?
Use the startup disk utility in Ubuntu or Mint to create a USB live device with persistent storage (slide the size from the minimum required all the way over to the maximum.)How do I run Linux Mint or ubuntu from a flash?
Installing on a flash drive is similar to installing on internal drive only difference is that you have to give flash drive path for Ubuntu root directory.How do I run Linux Mint or ubuntu from a flash?
You might check out the link below.
Boot up a Live CD for your distribution of choice with the flash drive plugged in, and install it on the flash drive.

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