If you got a USB memory stick you can boot gNewSense live as with the cd. What you will need:

A USB stick 1 GB+
A motherboard that support booting from removables.
A computer with usb ports with GNU/Linux or Windows running.

Make your stick bootable

This will guide you to make the stick bootable. We are going to use syslinux for it.

Install syslinux

Choose the operating system you run. GNU/Linux or Windows.

GNU/Linux

Syslinux may already be installed in your system. Type syslinux in a terminal. If the command is not found you have to install it from your distribution's repository. You can also run the following commands in a terminal:

wget http://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-3.63.tar.bz2
tar -xvjf syslinux-3.63.tar.bz2
cd syslinux-3.63/unix

Now you got syslinux ready to use. Keep the terminal window up so you can use it later.

Windows

Download a syslinux zip-file from http://www.kernel.org/pub/linux/utils/boot/syslinux/.
Unpack it.
Have up your terminal by clicking Start and then Run, type cmd and press Enter.
Cd to the directory where you unpacked syslinux, cd Desktop should work if you unpacked it to your desktop and if the terminal started in your user directory.
Type cd syslinux-3.63 or whatever version you have downloaded.
Finally type cd win32 to get into the windows binary.
Now you got syslinux ready to use. Keep the terminal window up so you can use it later.

Mount the stick

In the most modern operating systems USB memory sticks get mounted automatically.

If not and if you use a GNU/Linux distribution run mount: mount /dev/sdb1 /media/usb
You have to run the command as root or sudo. You also have to create the directory usb with mkdir /media/usb, or choose a mount point at your opinion.
The device name may also be different. Run dmesg | tail in a terminal after you have plugged in the stick.
Look for [sdb] or any similar. Add a 1 to it so it knows it is the first partition.

Run syslinux

Run the syslinux command shown below, in the window we set up earlier, assuming drive name is sdb1 or F:.

In GNU/Linux:
syslinux -s /dev/sdb1
In Windows:
syslinux.exe -s -m F:

Copy files from the gNewSense iso

Download a gNewSense iso from http://cdimage.gnewsense.org/ You can burn the iso to a cd and copy the files to the stick, but it is faster to mount the iso.

In GNU/Linux you mount it with mount -oloop /path/to/gnewsense-livecd-deltah-2.0.iso /media/iso
Again, it has to be done as root or sudo and the iso directory must exist.

In Windows you can use a program called Virtual CD-ROM Control Panel. Download it, unpack it and read it's readme for how to use it.
http://download.microsoft.com/download/7/b/6/7b6abd84-7841-4978-96f5-bd58df02efa2/winxpvirtualcdcontrolpanel_21.exe

Copy the casper directory to the memory stick. Copy the content of the isolinux directory to the memory stick. Rename isolinux.bin to syslinux.bin. Rename isolinux.cfg to syslinux.cfg.

Unmount the memory stick to write cache.
umount /media/iso

Memory sticks not automounted-fix

If you installed gNewSense from the memory stick the same memory stick is not automatically mounted. This is caused by the stick being added to the fstab file. Plug in your memory stick and check in dmesg what it got for a device name.

 dmesg | tail

Then edit fstab and remove the line containing the device name.

 sudo gedit /etc/fstab

For example: /dev/sdb1 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0

BootingFromUSB