SiGetSystemDisk

INT64 __fastcall SiGetSystemDisk(_FIRMWARE_TYPE FirmwareType, WCHAR **SystemDisk){
  UINT8 IsWinPEBoot; 
  INT64 v5; 
  int BootDeviceName; 
  INT64 v7; 
  int BiosSystemDisk; 
  PARTITION_STYLE v10; 
  WCHAR *ResultName; 
  ResultName = 0i64;
  v10 = PARTITION_STYLE_GPT;
  IsWinPEBoot = SiIsWinPEBoot();
  BootDeviceName = SiGetBootDeviceName(0i64, (WCHAR *)L"WindowsSysPartDevice", 0i64, 0i64, 0, SystemDisk);
  if( BootDeviceName >= 0 )
    return(unsigned int)BootDeviceName;
  if( !IsWinPEBoot )
  {
    LOBYTE(v7) = 1;
    BootDeviceName = SiGetBootDeviceName(0i64, (WCHAR *)L"FirmwareBootDevice", v7, 0i64, 0, SystemDisk);
    if( BootDeviceName >= 0 )
      return(unsigned int)BootDeviceName;
  }
  if( FirmwareType == FirmwareTypeBios )
  {
    BiosSystemDisk = SiGetBiosSystemDisk(SystemDisk);
  }
  else
  {
    if( FirmwareType != FirmwareTypeUefi )
    {
      BootDeviceName = -1073741637;
      goto LABEL_7;
    }
    BiosSystemDisk = SiGetEfiSystemDevice(0i64, v5, (CHAR **)SystemDisk);
  }
  BootDeviceName = BiosSystemDisk;
LABEL_7:
  if( BootDeviceName >= 0 )
  {
    BootDeviceName = SiTranslateSymbolicLink(*SystemDisk, &ResultName);
    if( BootDeviceName >= 0 )
    {
      ExFreePoolWithTag(*SystemDisk, 0);
      *SystemDisk = ResultName;
      return(unsigned int)BootDeviceName;
    }
    return 0;
  }
  if( BootDeviceName == -1073740719 )
  {
    if( IsWinPEBoot )
    {
      if( FirmwareType == FirmwareTypeUefi )
      {
        LOBYTE(v7) = 1;
        if( (int)SiGetBootDeviceName(0i64, (WCHAR *)L"FirmwareBootDevice", v7, &v10, 1, SystemDisk) >= 0 )
          return 0;
      }
    }
  }
  return(unsigned int)BootDeviceName;
}

Referenced by: