I am going to try to see if dd to USB is possible. Aside from the boot target there may be other issues. For example depending on the USB drive and if there is a compact flash inserted the USB may not be named as expected to properly edit the /boot/grub/menu.lstrockerrock wrote: Using Windows 7 x64 w/ winzip 64 using dd for windows to external flash drive that has been working in the past. Flashing TO USB disk from WINDOWS for boot off of EXTERNAL USB, NOT internal. I still have winCE on the tablet and plan on keeping it there, for now..
You should however create a backup of your existing WinCE. You can find excellent instructions here. Once you create this backup you can restore it to new condition, if anything should happen to your internal disk, or if you decide to try an alternate OS.