在USB大容量存储上写入权限

Question

I want to make an usb disk write protected, I have found doing this as a solution: 我想对USB磁盘进行写保护，已找到解决方法：

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies]
"WriteProtect"=dword:00000001

But this has 2 drawbacks for me: 但这对我有2个缺点：

It doesn't work on a already mounted usb disk, if the mounting is prior to modifying the registry, it works though if I remove and add the disk or any other disk again. 它在已经安装的USB磁盘上不起作用，如果在修改注册表之前进行了安装，但是如果我再次删除并添加磁盘或任何其他磁盘，它仍然可以工作。
This works for all usb ports. 这适用于所有USB端口。

So, what I what is to: 所以，我要做什么：

Make the usb disk write protected based on the serial number(which I get in a windows service) immediately after I get the device_arrival event in my windows service. 在Windows服务中收到device_arrival事件后，立即根据序列号（在Windows服务中获得）对USB磁盘进行写保护。 I don't want to have to reinsert the usb stick for it to work. 我不想重新插入USB记忆棒以使其正常工作。
And could it be possible to restrict this behaviour for specific usb disks? 是否可以限制特定USB磁盘的这种行为？ I mean, If I have usb disk nr1 which I want to be write protected, and usb disk nr2 which I don't want to be write protected, could I mount them bothm on my pc at the same time with the desired write/read premssions? 我的意思是，如果我有想要被写保护的USB磁盘nr1和不想被写保护的usb磁盘nr2，我是否可以将它们都同时安装在PC上，并具有所需的写/读功能敬畏？

By the way, I want to do this in C#, and I'm working on Windows 7. 顺便说一句，我想在C＃中执行此操作，并且我正在Windows 7上工作。

Answer 1

Don't know how valid this is but could you force an eject and remount in software? 不知道这有多有效，但是您可以强制弹出并重新安装在软件中吗？