Ah... you may need to also use /a:h to show hidden files.

That said, it could also be that the file system was damaged, and that
reformatting was the right course of action.

-- 
Raul

On Wed, Mar 29, 2023 at 10:36 PM Devon McCormick <[email protected]> wrote:
>
> Thanks for the tip but it appears that "dir" from the DOS command line
> thinks there is nothing to see there.  The J "dir" command works better.
>
> On Wed, Mar 29, 2023 at 7:48 PM Raul Miller <[email protected]> wrote:
>
> > I have not seen anything like this, but in the older "fat" file system
> > formats, I remember that files (and directories) had two names -- a
> > longer "display name" and the "short name" which was the real
> > identifier for the file. And, it's entirely possible that a usb drive
> > would have been formatted as a FAT filesystem (perhaps even FAT32 if
> > it was a small drive, but more likely exFAT).
> >
> > dir /x would display the short names.
> >
> > I hope this helps,
> >
> > --
> > Raul
> >
> > On Wed, Mar 29, 2023 at 7:07 PM Devon McCormick <[email protected]>
> > wrote:
> > >
> > > Hi, this is not really a J question but I used a little J to confirm
> > > something.
> > >
> > > A recently purchased thumb drive showed me that there are apparently two
> > > top-level directories with the same name:
> > >    dir 'F:*'
> > > +-------------------------+-------------------+-+---+------+
> > > |System Volume Information|2023 3 29 17 13 44 |0|rw-|-hs-d-|
> > > +-------------------------+-------------------+-+---+------+
> > > |System Volume Information|2022 12 31 17 58 50|0|rw-|-hs-d-|
> > > +-------------------------+-------------------+-+---+------+
> > >    -:/&><"1|:dir 'F:*'
> > > 1 0 1 1 1
> > >
> > > We see from the above that the names are identical.  I was unable to
> > rename
> > > either one so, with no way of distinguishing between them, I ended up
> > > reformatting the drive.
> > >
> > > This is under Windows 10.  Has anyone ever seen something like this?
> > >
> > > --
> > >
> > > Devon McCormick, CFA
> > >
> > > Quantitative Consultant
> > > ----------------------------------------------------------------------
> > > For information about J forums see http://www.jsoftware.com/forums.htm
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
>
>
> --
>
> Devon McCormick, CFA
>
> Quantitative Consultant
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm

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