Unable to safely uninstall the U disk what to do

We all know that in the computer after the use of U disk, you have to safely remove the hardware before you can pull out the U disk, so that you will not damage the U disk, resulting in the data loss on U disk. If the security uninstall U disk is not successful, how to do?

In the use of U disk, we will often encounter this situation: USB connector in the computer after the use of a U disk, according to the normal operation click the lower right corner of the taskbar "unplug or Eject hardware", and then click "Stop USB Mass Storage device-Drive", did not appear "usb Mass Storage Device device is now safe to uninstall from the System dialog box, but there is another dialog box "Now cannot stop the universal volume device, please stop the device later." After inspection, u disk in the program files have been closed, the computer and U disk there is no data transmission. So why is this kind of situation happening?

This situation is likely to be a U disk when inserted in the Windows Task Manager should be added to the corresponding process, the hardware when the normal pull-out of the corresponding process automatically ended, when this process can not end the normal hardware can not be pulled out. To verify this conjecture, we first open Task Manager and go to the "process" column, note that the lower left corner shows: "Process number: 23", and then insert a U disk, and then focus on the "number of processes," but when the system to find the hardware, everything shows normal, the number of processes did not like the author imagined that the 24, But to keep 23 unchanged. So it seems that the U disk insert when there is no corresponding to the number of processes, then this phenomenon is difficult to explain.

Just as we reluctantly click on the tray icon, want to uninstall U disk, suddenly found when the "Stop USB drive" after the number of processes into 24, that is, uninstall hardware to be a process "responsible", when the hardware uninstall, the process also ended. After many experiments, found that the process is the name of rundll32.exe, Haha, the original is this familiar link program.

So is there a process that has to do with the inability to uninstall the hardware? It just happened again. "Unable to stop the device," the opportunity to open the Task Manager of the process bar, in turn, each end a seemingly related process, the test to see if the hardware can be pulled out. After ending a few useless processes and discovering that there are 3 identical rundll32.exe processes in place at the same time, when these processes are finished, we find that the hardware can be removed normally.

It is really kung fu, it seems the crux of the problem is still on the rundll32.exe. Through this research, we summed up: U disk can not be unloaded normally, the process bar must have no end of the rundll32.exe (of course, some rundll32.exe may and the system is running the program related), put these several rundll32.exe process end, U disk on Ken will be able to uninstall the normal.

Warm tips:

If this can not stop the phenomenon of the device, it is possible to create a batch file, which input "Taskkill/im rundll32.exe", Save as a delusb.bat, when the failure to run on it. This method is more convenient.

I have to say, this tutorial solves this problem to our daily use of U disk greatly help. Small series with the experience of using U disk, there is a relatively high probability of this problem. When this problem arises in the future, we can easily deal with it.