Setting kernel debugging in Windows 7 with Visual BCD Editor
Using BCDEdit kernel debugging can be set on or off on Command Line Interface(admin mode) with:
bcdedit /debug [{ID}] { on | off }
{ID} is optional boot loader id and if not present addresses {current} - the boot loader used for booting the running OS.
Using Visual BCD Editor you can enable/disable kernel debugging for a loader by creating the element "KernelDebuggerEnabled" (if not already present) and setting its value to true/false.
To specify debugger connection options you can use the elements of {dbgsettings}.
Visual BCD equivalents for debug settings
Using bcdedit you can specify following dbgsettings:
- bcdedit /dbgsettings SERIAL [DEBUGPORT:port] [BAUDRATE:baud] [/start startpolicy] [/noumex]
- bcdedit /dbgsettings 1394 [CHANNEL:channel] [/start startpolicy] [/noumex]
- bcdedit /dbgsettings USB TARGETNAME:targetname [/start startpolicy] [/noumex]
Standard is debugger connection on serial port 1 and baud rate 115200.
All equvalent Visual BCD debug settings elements are Library type elements:
- DEBUGPORT:port
-
SerialDebuggerPort
SerialDebuggerPortAddress
- BAUDRATE:baud
-
SerialDebuggerBaudRate
- CHANNEL:channel
-
1394DebuggerChannel
- TARGETNAME:targetname
-
UsbDebuggerTargetName
- /start startpolicy
-
DebuggerStartPolicy
- /noumex
-
DebuggerIgnoreUsermodeExceptions
Command for USB debug settings and Visual BCD equivalent:
bcdedit /dbgsettings USB TARGETNAME:MyTargetName /start autoenable /noumex
If you want to load/debug a 64-bit driver you can use boolean element "AllowPrereleaseSignatures" which is the eqivalent for
bcd /set testsigning on|off
which enables/disables loading and debugging of 64-bit drivers for the OS loaded by {current}.
The driver has to be signed but you can use any certificate during testing.
See original Microsoft document https://msdn.microsoft.com/en-us/library/ff542187.aspx on debug settings.
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