Alternative design choice could be to prioritize boot from USB always, this way there is no explicit need to trigger this.Requires changes to respond to HW trigger (key/key combinations) to boot from USB.May require hardware key (or key combination) to trigger this.Deploy Windows using Full Flash Update(FFU) provides information on storing FFU files in USB.WinPE: Create USB bootable drive provides information on creating a bootable USB drive.In this method, we boot the device from USB (with bootable safe OS and the FFU) and flash the device with the FFU present in the USB. These require changes in the BSP to realize the complete functionality. The design choice is influenced by the hardware available (eg. Recovery design choice : Based on the location of the Safe OS and the recovery software, various design choices are available.Recovery SW : SW Image used to re-flash the devices.This OS can be configured to launch on boot, the flashing app with a predefined location for the recovery images. For certain hardware configurations and storage media types, specific drivers may be required to be added to WinPE to boot successfully.
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