Unable to delete a folder - Invalid folder name

Unable to delete a folder on an external USB HDD. Tried with take ownership.
Tried Takedown, and some options on
Owner of Files and Folders - Change in Windows 10 - Windows 10 Forums

I booted from USB (WinPE/Paragon) and accessed command prompt from there.
Deleting the folder: invalid folder name.

Have no idea how to solve it.
I can rename the folder, but not move it.

Any suggestions?

As far as I can see I am the owner/administrator and having full control on the folder...?

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W10 Unable to delete folder-invalid folder name.pdf

Have combined all screenshots into 1 PDF - else the post would be way too big.
never uploaded a PDF before.
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Thanks. WIll get back on this soonest. I am not sure about the Linux stuff though: never done this before - never went down this 'slippery' road - slippery for me.

Later... I don't know ... I guess I leave it as it is. The folder is very small. 'properties' say 0 bytes and chkdsk will take a day (at least, that is the 'ETA').
I let the matter go, it isn't worth all the workload.
Thanks anyway.
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tfwul said:

chkdsk will take a day (at least, that is the 'ETA').

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I am glad I am not the only one with the same aggravating experience.
Chkdsk takes so long it's absolutely unbearable.

Seems you cannot stop it. At least the usual CTRL-C doesn't work. My 'workaround' was to close all applications, then close the elevated command prompt with chkdsk running. The shut down the pc and restart. All seems to be okay now. The folder can still not be deleted though. Take Control, TakeDown, whatever, they don't work in my case.
I used
icacls "x:\somefolder" /setowner "Administrators" /T /C
takeown /F "x:\somefolder" /A /R /D Y
and takeownership
I also went thru option 5 from : Owner of Files and Folders - Change in Windows 10 - Windows 10 Forums
But there the window changing ownership hanged and I had to close it after 20 minutes

It ain't easy...

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davidhk said:

I am glad I am not the only one with the same aggravating experience.
Chkdsk takes so long it's absolutely unbearable.

Interesting to hear, as for me Chkdsk has never taken more than 3 to 4 mins tops. Granted both my computers have a SSD on their C-drive, but my D-drives are spinners. Even my D drives don't take long.

topgundcp said:

Depend on what option you use and how badly corrupted your HD is. It can take hours to run, sometimes seems to stall at one spot. For example, if you run with /r option, chkdsk will do a surface scan on every spot on the whole HD including unused spaces, also mark all bad sectors in the MFT table so Windows will avoid using them.

Ahh I didn't use the /r option used /f option, which always reports it found no problems. Will have to try that sometime....not today thou. :)

Assume it also depends on the size of the HDD. With me it was/is a WD USB 3.0 external 6TB drive.
Also see: CHKDSK stuck in stage 4 of 5 since last night - Microsoft Community