I managed to solve the issue. The situation was the following, a bit more complicated than i initially said: /etc/rc.local contained calls to several scripts. The first one was meant for the first boot only and after a few things had to shutdown but the very next script was the one containing the pr...

File system is FAT32, unmounting before shutdown is the only thing i haven't tried yet. Reformatting is out of the question because of the nature of what i'm trying to accomplish (windows compatibility yay). But is there that big a difference from calling sync?

Ok i did some more testing and now i think i've narrowed down the problem: if i run the script without the final "shutdown -h now" everything is OK.
Still it is very worrying that i'm losing data even after TWO calls to sync and a proper shutdown. How come?

Been there, done that. No problem whatsoever. Also as i said the problem is that some files get copied, not all of them, which smells like some ugly form of caching is in the way.

No errors, the -f flag is just to overwrite without prompting.

Hi, i'm having issues with my raspberry pi model B (running a fully up-to-date raspbian) and my 8GB USB storage device: i am developing a small embedded system which has to check for the presence of certain files inside the USB device and copy them (if they're not there). My problem is that only few...