I recently purchased a 250GB Western Digital My Book external hard drive. It came with USB and Firewire 400 connections. This is not my first USB device, but it is my first external hard drive. Because I had some frustration trying to make the drive work with my computer (get recognized) and also experienced frustration trying to get the drive to work with the TI 9.0 Rescue boot disk (get recognized), I wanted to share how I got this drive to work. The solution is very easy, but it took me some trial and error to figure out. If you are now in the same boat I was in a few days ago, this post may save you some frustration. Before I start, I want to mention that my plan for the My Book is to use it as a place to store my backup images. I plan to keep the drive on a shelf or in its box when it is not needed for images or restores. I do not plan on having the drive permanently connected to a PC. When I got the drive, I followed the Western Digital instructions to install the basic software/drivers and to make the connections. I did not install the WD backup program or any other non-essential programs. The PC recognized the My Book and everything was fine. I wanted to make sure, I could easily move the drive between my two (2) PCs and have the drive be recognized by each PC. This is where I ran into my first frustration. After the initial setup on each PC, I could not get the PCs to recognize the My Book during a normal boot. The problem was I thought I could connect the My Book at any time and have the PC recognize the drive. What I was doing was connecting the My Book to the PC and then turning on the PC. Based on my reading of the manual, I believed the PC would turn on and recognize the My Book automatically. What figured out was that the only time the PC will automatically turn on the My Book and recognize it at boot up is when the My Book was attached to the PC when the PC was last shutdown. If you plan to pull the My Book from a shelf for a back up (and the My Book has not been connected to the PC for a while) the process is different. To get the My Book recognized by the PC, you must first fully boot your PC. Then you need to fully spinup (turn on) the My Book. Then you have to connect the USB/Firewire cable to the My Book, and connect that wire to the USB/Firewire port. After a short time, the PC will load the Western Digital Button Manager (blue system tray icon) and the My Book will be useable. When you are done with your imaging/restoring with TI in the windows environment and you are ready to disconnect the My Book from the PC, you can "Safely Remove" the My Book through the System Tray icon and wait for the PC to automatically turn off the My Book before disconnecting the drive, or you can turn off the My Book by pressing the button on the front of the drive and wait for the drive to turn off. Then you can disconnect the drive. With this fully understood, I was able to get the My Book recongized by the PC, create an image of my internal drive with TI in the windows envirnoment and have that image saved to the My Book external drive. Because of what I learned through trial and error, I thought I knew all I needed to know to create an image using the TI 9.0 3677 build Rescue boot disk, but I was wrong. I wanted to verify that I could create an image using the non-windows environment by using the TI Rescue boot disk. I felt that it was important for me to know that if my hard drive became corrupt and windows did not load that I would be able to restore an image from the My Book using the TI boot disk. Being able to create an image with the TI boot disk and saving that image to the My Book would let me know that the My Book would get recognized/function when I booted with the boot disk. I proceeded based on what I learned about getting the My Book recognized by my PC during a normal boot (without the boot disk). I booted from the TI Rescue boot disk, selected Full Mode, and waited for the TI program to fully load. Then I turned on the My Book, and then connected the cable to the My Book and then to the PC. However, the PC/TI boot disk did not recognize the My Book as the PC had during a normal boot. What I figured out was that the way to get the My Book recognized during a TI rescue disk boot is different than the steps you take during a normal boot. To get the My Book recognized by the PC/TI Rescue disk you have to turn on the My Book and connect it to the PC before you boot the PC with the TI Rescue boot disk. When the My Book is turned on and connected before you boot with the boot disk, when you get into the TI Rescue program, the My Book will appear as expected as a separate drive when you begin to create images or do restores. Once I understood this, I was able to do full image backups of my internal drive and save the images to the My Book external drive. Like I said initially, the solution is easy. However, no one told me that the My Book setup process was different depending on whether you were doing a normal boot to windows (without the boot disk) or booting with the TI Rescue disk. I am not blaming anyone, as my difficulties were likely due to a lack of knowledge of how these things work and I feel all experiences (good and bad) add to my understanding. I hope the above is helpful and saves at least one person some time and frustration.