Access memory mapped file in flash drive from BugCheck callback RRS feed

  • Question

  • Can a memory mapped file in external flash drive be accessed from BugCheck callback routine ?

    Assuming that very limited activities can be done in a bugcheck callback, can this write to a memory mapped file be done ?

    Does that work in dump driver path ?

    Monday, March 23, 2020 3:56 PM


  • Didn't you already ask this question and get an answer?

    No.  By the time a bugcheck happens, the USB subsystem is shut down.  The memory-mapping mechanism doesn't have a magic path to the drive.  It has to submit USB requests, and those will fail.

    Tim Roberts | Driver MVP Emeritus | Providenza & Boekelheide, Inc.

    Monday, March 23, 2020 5:43 PM