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I just wanted that screenshot to provide a point of further discussion for the user, since there seems to be some confusion caused by using Krusader to explain to us where the files in question actually are. The file you mention seems to imply that there is actually a data share, and it also looks like Krusader probably has a mapping from /data to /mnt/user So, are we talking about files in the data share, in the Media share (not sure there is actually a media share) or what?

Just UDMA CRC ERRORs, these are connection problems not disk problems. Click on 👎and Acknowledge, it will warn again if it increases.

yes

dynamix.file.integrity.plg You can go directly to the correct support thread for any of your plugins by clicking its Support link on your Plugins page.

Apr 6 17:41:14 SchmittNAS webgui: File_put_contents_atomic failed to write / rename /mnt/bad/1691912352.tmp Apr 6 17:41:14 SchmittNAS root: Fix Common Problems: Error: Unable to write to badLooks like your bad pool may be readonly. It has no user shares, no user shares are configured to use it, yet it is 85% full. What can you tell us about that pool?

Post a screenshot of the User Shares page.

Yes

Sorry, I left out a very important instruction. Nothing can move open files. Go to Settings and disable Docker and VM Manager. Then run mover, wait for it to complete, post new diagnostics.

When you run it yourself using the MOVE button in Array Operation, the button will become disabled while it is running, and enable again when it is complete.

Maybe try powering down and even unplugging your server for a minute in case something is not resetting with your USB controllers. Can you see the USB drive in BIOS?

Attach Diagnostics ZIP to your NEXT post in this thread.

The usual cause of filling docker.img is an application writing to a path that isn't mapped. Also make sure you don't have any orphans. On the Docker page, there is a slider at upper right which switches between Basic and Advanced View. Put it on Advanced and see if you have some orphans listed at the bottom.

I don't use that plugin, but its description says it is only for checking array disks. You might see if you can find out more on the support thread for that plugin. maybe not Doesn't really matter.

Are you using ports on the I/O panel (the back)? Or are you trying to use ports on the case (which might not even be connected)?

If you click on your avatar/username at the upper right of the forum and select Account Settings, you can enable viewing signatures (sigs) in the forum, and also edit your own sig. Signatures are a common feature of forums. It is a small bit of text appended to the bottom of each of your posts. Here is one thing from my sig: Donations

I assume you are booting Unraid from a USB flash drive. Correct? Have you ever tried to use an Unassigned Device before on this hardware?

That looks good so far. Reassign disk4 and start to rebuild

Your syslog is filling up with entries about one of your disk controllers.

Doesn't really look like you have any plugins that might be a problem anyway. You mean other USB drives also don't show as Unassigned Devices? Are you trying to run Unraid as a VM?

Set the emulated disk4 to not assigned, start the array, post new diagnostics. Then we can see if emulated disk4 is still logging any corruption before proceeding with rebuild.

Can you see it as an Unassigned Device if you boot in SAFE mode? (You won't be able to mount it since the plugins won't be installed).

Does it work if you plug it in to another computer?

Still nothing. Have you tried another port? Can you tell us more about the USB drive? Got a link to the product?

I don't see any lost+found from the repair. Did you format the unmountable disks?