Bootable USB stick - Kubuntu

Newbie question.

I have created a bootable USB for Kubuntu and assigned the remaining space on the USB for use.
Everything works and is good for starting to learn.

I am wishing to tale this further and do the same with other OS ISO , and have to have the option to have a multiboot USB.

However, I would have thought that any files I created or updates made, (during the session) would have been written to the USB.

Is it not possible to do this?

Any assistance, would be much appreciated.
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The Live distro has to be specifically designed to store changes onto the USB key. Most don't do that, but some do.

As to your multi-boot question, YUMI ( lets you add multiple distros to a single USB key. One nice feature of YUMI is that it has a stand-alone EXE that provides download links to dozens of distros. That means you can use YUMI in Windows to download multiple Linux distros, put them onto the USB key, then reboot into Linux.

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You could just install your OS normally to the USB stick or disk like you would to an internal HD. That works fine with Linux. Whatever changes you do during your session are then saved just like on any HD. As with HD's you can partition the USB stick and install a further OS to that other partition. Most distro's will recognize your other OS and add it to the Grub boot menu.
gavin_dAuthor Commented:
Thanks to both.
I will try YUMI - this looks like the solution I need for multiple distros.
I did not think of installing the OS directly to the USB........I will give this a go.

Again thanks,

I have been doing additional research into this and there has been a suggestion if I set up the USB for "persistence" (still to get a handle exactly what this entails), it will apparently save changes.....

Will test all at the weekend.
Many thanks again.
There are only a few distros that support "persistence" on Live systems. One of them is puppy.

For multiple LiveMedia on USB sticks I've been using a tool called "WinSetupFromUSB". Although it's name implies it is for setting up windows, it also boots into different Linux iso's that support Grub4dos or syslinux. I made a stick using that which boots into about 6 different distro's.
gavin_dAuthor Commented:
The information supplied has been useful and very informative.
Thanks to both for all your assistance.
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