求英语好的大神帮我分析下~~~

3. "recovery" - mainly for cases where the system stops booting because of i915 driver (seen on N3150 braswell), it overwrites all gpu drivers and firmware with files of 0 size on booting so they can't be loaded anymore, should also work for any system above but guarantees not having /dev/dri as even the firmware used from the dsm's own i915 driver is invalid (on purpose) - if that does not work its most likely a network driver problem, safe choice but no transcoding support