在 XP 中写入注册表 (HKEY_LOCAL_MACHINE)

发布于 2024-08-04 11:49:43 字数 1552 浏览 4 评论 0原文

我正在尝试修改一个注册表项，我被告知该注册表项控制是否在特定硬盘驱动器上启用写入缓存。密钥应该是： HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\IDE\\\DeviceParameters\Disk\UserWriteCacheSetting

但是，在尝试创建此密钥时，我一直遇到问题（因为默认情况下它不存在）。如果我尝试使用写入权限打开 ...\DeviceParameters\Disk\ ，则会收到 SecurityException 错误； “不允许请求的注册表访问”。现在我已将标志添加到我的清单文件中，以确保我具有管理员访问权限，但我仍然没有任何权限运气。

任何想法都会很棒！

    static void Main(string[] args)
    {
        RegistryKey myKey = Registry.LocalMachine.OpenSubKey("SYSTEM\\CurrentControlSet\\Enum\\IDE\\");

        foreach (string driveManafacturer in myKey.GetSubKeyNames())
        {
            RegistryKey driveKey = myKey.OpenSubKey(driveManafacturer);
            foreach (string driveID in driveKey.GetSubKeyNames())
            {
                RegistryKey driveIDKey = driveKey.OpenSubKey(driveID, true);
                string driveType = (string)driveIDKey.GetValue("Class");
                if (driveType == "DiskDrive")
                {
                    RegistryKey tempKey = driveIDKey.OpenSubKey("Device Parameters\\Disk\\", true);
                    if (tempKey == null)
                    {
                        tempKey = driveIDKey.CreateSubKey("Device Parameters\\Disk\\");
                        tempKey.SetValue("UserWriteCacheSetting", 0x0);
                    }
                }
            }
        }

        return;
    }

原文

I am trying to modify a registry key that I have been told controls whether write-caching is enabled on particular hard drives. The key should be: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\IDE\<DiskName>\<SerialNo>\Device Parameters\Disk\UserWriteCacheSetting

However I keep having problems when trying to create this key (as it doesn't exist by default). If I try to open up the ...\Device Parameters\Disk\ with write access I get a SecurityException error; "Requested registry access is not allowed". Now I have added the <requestedExecutionLevel level="requireAdministrator" uiAccess="false" /> flag to my manifest file so as to ensure I have admin access, but I'm still not having any luck.

Any ideas would be great!

    static void Main(string[] args)
    {
        RegistryKey myKey = Registry.LocalMachine.OpenSubKey("SYSTEM\\CurrentControlSet\\Enum\\IDE\\");

        foreach (string driveManafacturer in myKey.GetSubKeyNames())
        {
            RegistryKey driveKey = myKey.OpenSubKey(driveManafacturer);
            foreach (string driveID in driveKey.GetSubKeyNames())
            {
                RegistryKey driveIDKey = driveKey.OpenSubKey(driveID, true);
                string driveType = (string)driveIDKey.GetValue("Class");
                if (driveType == "DiskDrive")
                {
                    RegistryKey tempKey = driveIDKey.OpenSubKey("Device Parameters\\Disk\\", true);
                    if (tempKey == null)
                    {
                        tempKey = driveIDKey.CreateSubKey("Device Parameters\\Disk\\");
                        tempKey.SetValue("UserWriteCacheSetting", 0x0);
                    }
                }
            }
        }

        return;
    }

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苍景流年 2024-08-11 11:49:43

我没有更好的建议。尝试手动创建注册表项，只是为了确保可以。然后确保应用程序正在使用您的凭据运行。只是为了消除权限问题。

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秉烛思 2024-08-11 11:49:43

编辑：删除了有关部分信任的想法......事实证明它与问题无关。

我尝试了你的代码并得到了同样的错误 - 经过一些修改它可以工作：

RegistryKey myKey = Registry.LocalMachine.OpenSubKey( "SYSTEM\\CurrentControlSet\\Enum\\IDE\\" );

foreach( string driveManafacturer in myKey.GetSubKeyNames() )
{
  RegistryKey driveKey = myKey.OpenSubKey( driveManafacturer );

  foreach( string driveID in driveKey.GetSubKeyNames() )
  {
    RegistryKey subKey = driveKey.OpenSubKey( driveID );
    string driveType = (string)subKey.GetValue( "Class" );
    if( driveType == "DiskDrive" )
    {
      RegistryKey tempKey = subKey.OpenSubKey( "Device Parameters", true );
      RegistryKey tempKey2 = tempKey.OpenSubKey( "Disk" );
      if( tempKey2 == null )
      {
        tempKey2 = tempKey.CreateSubKey( "Disk" );
        tempKey2.SetValue( "UserWriteCacheSetting", 0x0 );
      }
    }
  }
}

EDIT: Removed the idea about partial trust ... it turned out that it had nothing to do with the problem.

I tried your code and got the same error - with some modifications it works:

RegistryKey myKey = Registry.LocalMachine.OpenSubKey( "SYSTEM\\CurrentControlSet\\Enum\\IDE\\" );

foreach( string driveManafacturer in myKey.GetSubKeyNames() )
{
  RegistryKey driveKey = myKey.OpenSubKey( driveManafacturer );

  foreach( string driveID in driveKey.GetSubKeyNames() )
  {
    RegistryKey subKey = driveKey.OpenSubKey( driveID );
    string driveType = (string)subKey.GetValue( "Class" );
    if( driveType == "DiskDrive" )
    {
      RegistryKey tempKey = subKey.OpenSubKey( "Device Parameters", true );
      RegistryKey tempKey2 = tempKey.OpenSubKey( "Disk" );
      if( tempKey2 == null )
      {
        tempKey2 = tempKey.CreateSubKey( "Disk" );
        tempKey2.SetValue( "UserWriteCacheSetting", 0x0 );
      }
    }
  }
}

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