Portable Linux这个软件可以将Linux的Live CD安装到U盘上，而且还有一些特殊的功能。和Ubuntu提供的创建USB LiveCD的工具相比，确实有不少改进，基本上可以支持任何Linux发行版。
Portable Linux lets you convert your removable drive into a Live,
bootable Linux, so you can run your favorite Linux distribution with
your favorite settings, anywhere in the world.
Unlike the competition
, Portable Linux can:
Save disk space and use your removable drive as usual:
The live removable drives created by this program let you use the
remaining disk space on your removable drive to store and transport
files between Windows, Mac and Linux computers, as usual. Since it
uses a Live CD, you save valuable disk space on your removable drive.
Remember your customizations: What's more, if your distribution supports
persistence, the files and settings you edit on your live Linux
distribution are persisted across reboots.
Install any distribution, on any distribution: Unlike the competition, it runs on any Linux distribution.
On top of that, you can install not just Ubuntu, but any distribution
that uses Casper as its LiveCD technology. So if you have Fedora and
want to create a live removable drive with Debian, no problem, Portable
Linux can do it.
Rescue systems and run other OSes: Since it uses GRUB (the GRand Unified Bootloader), you can:
to it (handy for those BIOS updates),
boot a Linux or Windows machine with a damaged MBR (master boot record), then subsequently repair it,
boot any operating system installed in any of the disks in your computer; and even
boot your Linux operating system using the root partition on your hard disk.
Access all your files saved on the USB drive: Finally,
you can access the area used to store your files just fine from within your Linux distribution
In that manner, you can create your live Linux distro, install a couple
of codecs and applications on it, put a bunch of MP3s or movies in it,
and you've got a complete multimedia center on your pocket!
After creating your live removable drive with Portable Linux,
don't forget to read the Questions and tips section on this Web site