Different Methods to Create Live USB with Linux

Your computer is running Windows. Hope, only temporary. And you want to try Linux on that machine.
Or you are already in Linux and want to give a go to another distribution.
For some reason, CD/DVD drive is not available or not working. Do you have any chance to get what you want?

Image of Dariolynx

Of course! Solution is very simple. Instead of running Linux from CD, you can create Live USB with iso image.
There are different methods to achieve the task. Let's look at some of them

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1. UNetbootin

This is one of the most popular methods of creation Live USB. This is free open source tool which supports Windows, Mac OS X and Linux (if you are already in Linux). UNetbootin allows you to either download iso image of distribution you want to try, or use previously downloaded image file. It supports many-many-many different distros. Even if distro is not listed in the drop-down menu, you can still give it a try and there are good chances to get what you want. I tried UNetbootin several times, and it is working perfectly in most cases.
Download UNetbootin.

2. Pendrivelinux (Universal USB Installer)

This is "young brother" of UNetbootin. It also supports a lot of different distributions. The difference, though, is that Universal USB Installer only runs in Windows. I tried it several times in my early days with Windows/Linux co-existence, and was rather satisfied with results. I dropped Universal USB Installer later, because Linux became my main Operating System.
Download Universal USB Installer.

3. Command dd

This is universal Linux command which allows you to directly copy image file to USB drive. Command dd is only available in Linux. There are analogues of it for Windows, but I'll talk later about this option. Command dd works for certain types of distributions, and might not work for others. Anyway, if you cannot achieve proper result with Unetbootin, dd should be your next step.
Documentation for dd.
Please note: command dd is very dangerous because it can easily destroy data on your computer if you mistype parameters. Use with double care.

4. Distro-specific (Mandriva, Fedora, Ubuntu, SuSE)

Many distributions have their own tools to create Live USB. There are generally speaking 2 types of them:
4a. Mandriva, Fedora, openSuSE allow you to create Live USB with their images from Windows.  I would advise you to visit official sites of distributions for more information about these programs.
4b. Ubuntu and openSuSE allow you to create Live USB from within the system. In case of Ubuntu, the tool also allows you to create Live USB with any Ubuntu-derived OS.

5. Scripts for Live USB creation

Some distros (like SLAX) allow you to simply copy files from image or archive to USB and then make it bootable using short script - .bat for Windows or .sh for Linux.

6. Others

Of course, list above is not comprehensive. If you want to learn more, I would advise you to read Wikipedia. I only tried to gather together information about most used methods.

I also promised you to tell about command dd for Windows. Yes, there is analogue in the Wikipedia list. I have never used it. Why? Because there are many more tools in Windows which worked perfectly for me, and then... there are Linux tools. Once you have at least one Linux system booted, you can easily create Live USBs from there, and command dd it most helpful there. So, why bother with Win-dd?

Image by Photohiro

Finally, you have created Live USB. You are only one step away from result. Leave your USB drive in the port. Reboot your computer. Choose booting option: USB. And, if everything is on your side, you'll be in Linux in few seconds! Do you like it? Sure you do! There is even chance that you are not the only being who likes it...

Have you ever tried these or other methods to create Live USB? Did they work for you? Please share your experience in comments below.

UPDATE: And yet another method!