HPE StoreEver LTO 5, User Manual

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Advanced troubleshooting techniques
The techniques in this chapter assume an advanced level of experience.
Preparing to generate Windows driver debug dump log
files
Generating a driver debug dump log file requires installing checked drivers and the DebugView
application.
Procedure
1. Navigate to the Hewlett Packard Enterprise technical support website ( http://www.hpe.com/
support/storage ) and then download drivers for the host with debug capability enabled.
2. Navigate to the support website and then download drivers for the host with debug capability
enabled.
3. Uninstall the released drivers. See Uninstalling the drivers .
4. In Windows 2008 or 2012 systems, place the system in Test Mode by opening a command window,
entering the command
bcdedit testsigning on
and then restarting.
After restarting, the desktop displays
Test Mode
in the lower right. If this step is not done, after
installing a checked driver, the system will boot into Recovery Mode. If the
bcdedit
command is not
recognized, it is not required for that system.
For further details, see: http://msdn.microsoft.com/en-us/library/windows/hardware/
ff553484(v=vs.85).aspx .
5. Configure the location for saving the dump file and the type of the debug output. A kernel dump is
preferred to the much larger complete memory dump.
6. Install the appropriate checked drivers for your operating system. See Installing the Windows
advanced path failover drivers . When prompted whether to allow installation of an unsigned driver,
allow installation.
7. In Windows 2008 or 2012 enable the debug print filter by editing the registry using one of these
methods:
Using a registry editing application:
a. Run a registry editing application (for example,
Regedit.exe
) with administrative privileges.
b. Navigate to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session
Manager\Debug Print Filter
. You may need to create the key
Debug Print Filter
.
c. Add a sub-key DEFAULT, which is different from the automatically created sub-key “(Default),”
with type
DWORD
and set it to
15 (0xF)
.
Open a command window with administrative privileges and issue the command:
reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session
Manager\Debug Print Filter" /v DEFAULT /t REG_DWORD /D 15
Advanced troubleshooting techniques 79