Memory cards and internal memory

[kacir]

Originally Posted by HarryT

Don't you think that generating a flat file list from a folder tree is actually rather more work than simply showing the folder tree in the first place?

No. I don't think so.
getting the contents of folders is easier than getting (let alone displaying) a tree structure.
Sony reader uses Montavista Linux with BusyBox
One of 280 unix utilities the BusyBox can be compiled to be is find.
So obtaining a list of all files in all subdirectories in, let's say, /opt/card is as simple as:
find /opt/card -type f
That is it.
Of course, you can get fancy, and have 'find' command list only files of supported types, and other stuff.