Mystery files and drive found (solved)

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peppyy
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Mystery files and drive found (solved)

Post by peppyy »

Hi all. I was doing some cleanup in my install of fossapup64 and locating some larger files using GDMap. (See screenshot).
I found a mystery drive, sdd1 that shows up in mnt/sdd1 but doesn't show on the desktop or puppy drive mounter and it has zoom-portable.tar.gz in it. (70mb)
I also found a vlc.appimage in home/spot which I don't remember putting there. (115mb)

I am guessing that since I do not use these I can safely delete them?
I am not sure what to do about the hidden drive though?

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Last edited by peppyy on Tue Feb 08, 2022 2:51 pm, edited 1 time in total.

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Re: Mystery files and drive found

Post by rockedge »

Is sdd1 being created as a virtual drive for a portable app?

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Re: Mystery files and drive found

Post by peppyy »

@rockedge That would be my guess. I have no other drives plugged in and it isn't running. There is quite a history in /mnt. Is a virtual drive mounted on boot?

desktop(22).jpg
desktop(22).jpg (24.5 KiB) Viewed 669 times

So would this be a virtual drive?

desktop(21).jpg
desktop(21).jpg (32.38 KiB) Viewed 669 times

I can delete zoom and see if it goes away.

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Re: Mystery files and drive found

Post by rockedge »

can you mount sdd1 at all? I don't think Zoom would create a virtual disk

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Re: Mystery files and drive found

Post by williams2 »

/mnt/ is an ordinary folder like any other folder.
sdd1 in /mnt is an ordinary folder.
There is nothing special about those folders.
For example, you can put a file or files in /mnt/sdd1/

You can mount a file system on any folder. That folder is now referred to as a mount point.

For example, you could plug in a usb flash drive and mount a file system in the flash drive on /mnt/sdd1
Now when you access /mnt/sdd1, you do not see what is in the folder.
What you see is the mounted file system on the flash drive.
If you unmount /mnt/sdd1 you will no longer see the file system on the flash drive,
you now see what is in the folder.

What happens is you mount the flash drive and save files to the flash drive.
If you forget to mount the flash drive, any files put in /mnt/sdd1 go into that folder.

sdd1 that shows up in mnt/sdd1 but doesn't show on the desktop or puppy drive mounter

That's because /mnt/sdd1 is an ordinary folder.
What shows in the drive mounter are block devices that contain file systems.

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Re: Mystery files and drive found

Post by p310don »

Have you had something plugged in that you copied these files to? If you copy from sda1 to sdd1, it'll copy to a MOUNTED drive on sdd1, if it's not mounted, it'll copy to the folder /mnt/sdd1

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Re: Mystery files and drive found

Post by mikewalsh »

@peppyy :-

For me, at least, any mount-point ever created in /mnt will remain there, whether in use or not. That green dot shows if it's currently in use.

Normally, my mount-points don't go above sdd, at most. I have on odd occasions, however, had three or four flash-drives plugged into the USB hub at the same time, copying or moving stuff across between them. For that reason - and that reason ALONE - I have mount-point directories showing, and listed up as high as sdg/sdh.

They'll remain there, until I manually remove them.....and as williams2 says, there's nothing special about them, once they're no longer 'hosting' a mount-point; when not "in-use", it's JUST an ordinary directory.

Truth to tell, I've never really investigated the things when not in use. The only time I ever normally go into /mnt is to clear out old, stale mount-points.....perhaps once a month. So I can neither confirm nor deny your findings.

Mike. ;)

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Re: Mystery files and drive found

Post by peppyy »

I deleted the file from sdd1 and on reboot it is no longer there.
I have had several drives plugged in at once, a usb backup drive, pen drives, hard drives with adapters etc. Hence the folder list in mnt goes up to sde3.

I have looked in them all and they are empty. Is there a chance that I was coping a file to sdd1 and it was interrupted or unmounted before it had a chance to write? I do a lot of "data recovery" for folks who have crashed or broken their computers, though I usually burn that to dvd or copy to a large pen drive.

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Re: Mystery files and drive found

Post by williams2 »

Is there a chance that I was coping a file to sdd1 and it was interrupted or unmounted before it had a chance to write?

Yes it is possible.

The plug for a usb flash drive might not be making good contact with the usb socket.

The flash drive might not be working perfectly and might disconnect randomly.

The flash drive might not be getting enough power to work reliably.

Often, usually, it could be human error (forgetting to mount the file system on the usb drive.)

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