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It's been years since I bookmarked this site and had to use it.

I posted this question yesterday on StackOverflow and "General Grievance" (related to Kernel Panic?) suggested I post here as well. So here goes:

Using Windows-11 Home. I have a Toshiba external drive that I use for backups. However, starting yesterday, when I plug it into the USB3 port the D: drive seems to get mounted twice:

Screen Shot from This PC

Note that one of the mount points is vertically in-line with the C drive and the second mount point is in-line with "This PC", as if it were another host. This is weird enough. However, when I try to "Safely Remove Hardware" it can't: "This device is currently in use." No, it is not! No program I know if is accessing it! Furthermore, I have LockHunter installed; it tells me "No process locking this file or folder." (Yesterday it was claiming it is use by "System."

Why would I be getting the double-mount? I've certainly never noticed this before.

How can I safely unmount it? Pretty safe bet: The double-mount is the reason I can't unmount it.

Another consequence: When I try to run an Acronis TrueImage (2018) backup, it cannot find the backup location, although it never had that problem before. I can take that up with Acronis once I get this double-mount issue out of the away but I strongly suspect this is also related to the double-mount.

Ideas, anyone, please?

Jacob Salomon
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1 Answers1

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  1. As @yisroel-tech states, Windows Explorer shows the drive twice. You can stop that with a Registry hack, but that is not your issue.

  2. You can find out what is locking a drive, such as a running application or it containing a Windows resource, with a tool such as free LockHunter and forcefully unlocking it.

  3. For safety, dismount the drive with a utility such as

  4. Finally, any issue you have with using Acronis TrueImage has absolutely nothing to do with the drive appearing twice, or with it being mounted. Perhaps you need a newer TrueImage version than 2018 for Windows 11 compatibility? Can you update your imaging tool?

DrMoishe Pippik
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