Hello sir, We are working under linux 7.1 with kernel 2.4.2. In this version we patched kernel-2.2.12-udf.patch.gz . We can able to write a cd-r using udf format. But we are unable to read cd-r in udf format. But we found support of udf in /proc/filesystems. Why it it happening like that. Please give suggestion so that we can able to read our written cd-r in udf format. Thanking you sir, Aruna.G -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/