Opensuse 11.2 is very easy to install on an USB stick. Size best is 4GB although can install in smaller usb stick.
1. Donwload a liveCD
2. cd to where the iso file is and then
2.1 find out which is your usb stick. You must be sure otherwise you can wiped out a whole HD!!
First become root
type your password
## ls -l /dev/disk/by-id/*usb*
you will find at the end the device, for example mine is /dev/sdc
2.1 Write the liveCD.iso to the usb stick
# dd if=liveCDiso of=/dev/XXX bs=4M
I paste MY interaction. I have just made one.
# ls -l /dev/disk/by-id/*usb*
lrwxrwxrwx 1 root root 9 2009-11-14 13:32 /dev/disk/by-id/usb-USB_2.0_USB_Flash_Drive_0ff07bb453d143-0:0 -> ../../sdc
# dd if=openSUSE-11.2-KDE4-LiveCD-x86_64.iso of=/dev/sdc bs=4M
172+1 records in
172+1 records out
722468864 bytes (722 MB) copied, 1842.22 s, 392 kB/s
Go to the openSuSE web site and you will find all the info