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
