When pull out portable disk or flash memory, generally we would execute operation “Delete the hardware safely”, but occasionally we would face the prompt “Universal volume cannot be stopped”, so users may not dare to pull out the USB wire.
There are many reasons for this prompt, generally, reason that online tutorial often mentions is that you’ve opened certain file on the portable disk and it is being used.
If it is of this situation, close relevant programs. In many cases, we’ve already closed all applications, but the prompt still appears.
Someone introduced two solutions for it:
One is end the process explorer.exe;
The other is to log off current user.
Of course, these two methods are all effective, but they don’t give a clear reason for this, and the solution is a little troublesome.
Actually, when prompt appears, mostly, it is because that explorer manger is scanning and prereading media file information on the portable disk background, such as AVI and MP3 files.
The media file information scanning function usually would badly affect system response speed, so the operation might be not fluent. You just cancel prereading, the problem would be solved.
The method to cancel prereading:
Keyed the next command on “Run” dialog: regsvr32 /u shmedia.dll, then the preread function would be cancelled.
Reason analysis:
Microsoft system file shmedia.dll, originally, supplying a convenient and useful function.
Once you get it, when you check media files in explorer, there’s no n