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In this episode of Defrag Tools, Andrew Richards, Chad Beeder and Larry Larsen continue looking at the Debugging Tools for Windows (in particular WinDbg). WinDbg is a debugger that supports user mode debugging of a process, or kernel mode debugging of a computer.
This installment goes over the cables and configuration steps required to set up kernel mode debugging.
We use these BCDEdit commands:
- bcdedit /dbgsettings
- bcdedit /dbgsettings 1394 channel:42
- bcdedit /dbgsettings net hostip:192.168.0.10 port:50000 key:a.b.c.d
- bcdedit /debug on
- bcdedit /debug off
In the debug session, we use these commands:
- .dump /f
- .reload /f
- !drvobj <module> 2
- bc *
- be <N>
- bd <N>
- bp <function>
- bm <wildcard>
- x <wildcard>
Make sure you watch Defrag Tools Episode #1 and Defrag Tools Episode #23 for instructions on how to get the Debugging Tools for Windows and how to set the required environment variables for symbol and source code resolution.
NT Debugging Blog - How to Setup a Debug Crash Cart to Prevent Your Server from Flat Lining
NT Debugging Blog - Remoting Your Debug Crash Cart With KDNET [10th May 2013]
USB3 Debugging Cable
- Note, you must use a USB3 A-A cable designed for debugging, otherwise it will fry your box!
[00:45] - Kernel Debugging Cables
[02:14] - USB 2.0
[04:13] - USB 3.0 - New in Windows 8/Windows RT
[05:30] - 1394 (Firewire)
[10:39] - Break
[11:38] - Driver Objects
[16:00] - Network - New in Windows 8/Windows RT
[17:30] - Breakpoint commands
[26:00] - Network - BCDEdit
[33:37] - SecureBoot and BitLocker
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