Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Portability is a huge advantage that Linux enjoys over most other desktop operating systems as most major distros work very well when installed to a flash drive. However, there are still machines in service that just won't play ball when it comes to USB booting. Fortunately, I found a nice little utility that can work around this problem.
Carrying data around on a flash drive is handy, but with Linux, it's possible to carry around an entire work environment. Unfortunately, however, there are some older systems that won't boot from USB. For example, I have a Sempron 3000+ system with 2GB of RAM that won't boot from USB, even though it's a usable system for some things. If the BIOS doesn't support booting from a flash drive, there's not much that GRUB can do as it doesn't contain any drivers and relies on the BIOS to find bootable media.