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MYun
In my driver I use IoWMIOpenBlock to query using SMBIOS_DATA_GUID when AddDevice is called. This function work well on window 7 x86, x64.
However, on window XP, POSReady 7 and POSReady 2009, the function will failed with GUID no found error. After booting into window, if I go to device manager, disable and enable my device, then this function will work well without problem. May I know why this happen and is there a way to work around this issue?
Additional info from debugger:
...
*** ERROR: Module load completed but symbols could not be loaded for swenum.sys
*** ERROR: Module load completed but symbols could not be loaded for update.sys
*** ERROR: Module load completed but symbols could not be loaded for mssmbios.sys
KD: Accessing 'C:\DRIVERS\objchk_wxp_x86\i386\MyDriver.sys' (\SystemRoot\system32\DRIVERS\MyDriver.SYS)
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However, on window XP, POSReady 7 and POSReady 2009, the function will failed with GUID no found error. After booting into window, if I go to device manager, disable and enable my device, then this function will work well without problem. May I know why this happen and is there a way to work around this issue?
Additional info from debugger:
...
*** ERROR: Module load completed but symbols could not be loaded for swenum.sys
*** ERROR: Module load completed but symbols could not be loaded for update.sys
*** ERROR: Module load completed but symbols could not be loaded for mssmbios.sys
KD: Accessing 'C:\DRIVERS\objchk_wxp_x86\i386\MyDriver.sys' (\SystemRoot\system32\DRIVERS\MyDriver.SYS)
IoWMIOpenBlock failed (status:0xC0000295)
MYunContinue reading...