Kernel vs. User-Mode Debugging
In Chapter 7, we discussed some of the differences between Windows user mode and kernel mode. It is more challenging to debug kernel-mode code than to debug user-mode code because you usually need two different systems for kernel mode. In user mode, the debugger is running on the same system as the code being debugged. When debugging in user mode, you are debugging a single executable, which is separated from other executables by the OS.
Kernel debugging is performed on two systems because there is only one kernel; if the kernel is at a breakpoint, no applications can be running on the system. One system runs the code that is being debugged, and another runs the debugger. Additionally, the OS must be configured to ...
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