I made an Ubuntu 11.04 64 bit Natty Narwhal Live USB image with Universal USB Installer (the recommended program) on Windows 7 64 bit. I was trying to run Ubuntu from the flash drive, but I kept getting this annoying message:

Code:
mount: mounting /dev/disk/by-uuid/04aa3697-7bc0-45b5-b86a-77a1e6534bd5 on /root failed: invalid argument
mount: mounting /sys on /root/sys failed: no such file or directory
mount: mounting /dev on /root/sys failed: no such file or directory
mount: mounting /sys on /root/sys failed: no such file or directory
mount: mounting /proc on /root/proc failed: no such file or directory
Target filesystem doesn't have /sbin/init.

No init fount. Try passing init= bootarg.

BusyBox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu7) built in shell (ash)
Enter 'help' for a list of build in commands

(initramfs)
I searched everywhere to fix it. But then I learned about the wonderful Linux Live USB Creator. I used this program to reformat my flash drive and install the Ubuntu .iso file. Everything works great now.