Pocket ISR Ian Kalinowski and Woon Ho Jung Our goal is to get a fully-functional ISR system to boot off of an external USB hard drive. We are starting with the Knoppix Linux distribution since it includes hardware detection software. This will enable the Pocket ISR device to boot on a wide range of computer hardware. Our initial host system will be the IBM Thinkpad T41p laptop that is used for the ISR beta test and we will be using a 40 GB USB 2.0 hard drive. Once we get the system to boot, we can combine work with other groups such as CD ISR to strip the Knoppix system down to only the necessary software. We can also test booting on other host machines. We may also try to use other USB devices to boot into an ISR system. The general approach we expect to take will be to configure the boot process to use an initial ramdisk (initrd) to load the appropriate USB drivers to load the root filesystem off of the USB hard drive. If we are unsuccessful with this approach, we might try to compile the Linux kernel with all the USB drivers built-in and apply publicly available kernel patches to boot from USB.