Erik, thanks for the info. I took a look at the mtools and while it's cool, I was looking for a lower-level solution. The problem is when the disk is read in linux, it uses it's cached version rather than the updated new version. Is there a way in the kernel to clear out this cache? (some dentry or inode code?) Thanks, David ---- David Yang UIUC Electrical Engineering 2004 http://www.ews.uiuc.edu/~dgyang dgyang@uiuc.edu -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/