The reason why the U disk can not stop the universal volume in Windows7 and the solution

In the process of using the U disk, the most depressing problem is that when the U disk is used to safely remove the U disk, the pop-up "Unable to stop the universal volume". Many times when we pop this up, we basically don't close it, just pull out the U disk. But if you pull out the USB flash drive directly, then the next time you use the USB flash drive, you find that the data is lost (although this probability is not high, I will encounter it once), the one that I lost makes me cry. . So in the future, I have to put out the U disk if it pops up "Can't stop the universal volume", I am willing to wait until my computer is gone. After the shutdown, I pulled out the USB flash drive and did not dare to remove it directly. And this article is to share with you the reason why my personal summary of the U disk can not stop the general volume and the solution
1
U disk has some processes, folders, files and the like are still open
A lot of times we have to remove the U disk can not be removed because we have some files or software is still open U disk has not been closed. If the file is very simple, you basically know it below. And if it is software, it is necessary to specifically look at what software on your U disk, you have opened it after plugging in the U disk. Because some software you close it directly, it still has a buffering process that allows you to quickly launch the software the next time you open it. At this point we can close the buffer process by combining the task manager (press Ctrl+Ait+Del).
2
End all rundll32.exe processes
This is mainly because your U disk may call a separate rundll32.exe, but there is no way to distinguish it, so you can only end all rundll32 .exe. If you want to know more, you can see what "rundll32.exe is, what is the use"
3
U disk has some content is also copied
we use U disk many times, is to copy the file inside and then Paste on other discs. At this time, if you do not copy the files of other disks, it may cause the USB flash drive to be safely removed. Or some of the contents of the USB flash drive on the clipboard cause it to be removed safely. You can copy other content from your computer.
4
End EXPLORER.EXE and then start EXPLORER.EXE.
Want to understand this you can see "What is Explorer.exe, what is the effect of disabling Explorer.exe?"
The above is the reason and solution for the U disk can not stop the general volume in Windows7. If the above methods can't help you, then you can basically wait until you are turned off, then pull out the USB flash drive. This is also the method I use most often. Because many times, I am too lazy to go to the process for analysis. Anyway, just remember to turn off the computer to pull the U disk.