I have a 32GiB microSD card an am reying to read it on my Devuan system.
I munted it with a simpel mount /dev/sdb1 /nedia/hendrik/

It reads almost everything fine, except for a few files whose names
contain '/' characters. I can handle the other horribly weird
characters in file names -- emacs Rename in the directory
editor works just fine. But the names containing '/'s even have
emacs stymied.

ls -l lists them like this:

-rw-r--r-- 1 hendrik hendrik       0 Sep  1  2007 06 - Track 6.mq3
-????????? ? ?       ?             ?            ? 07/TRA~1.MP3
-rw-r--r-- 1 hendrik hendrik 3585716 Sep  1  2007 08-URA~1.MP3

With the slash, it can't even figure out the permissions, ownership, or
file size. Preumably some parts of the system interpret the '/' as the
directory name separator, and in this file system that's not what it
is.

Does anyone have any ideas here other than begging, borrowing, or
buying a Windows system?

-- hendrik