Hello list, I've been trying to figure out how to use my BD disc writer to create backups of files.
What I first found were instructions to create an empty file of the propper size, 'mkudffs file', loop mount it, copy files to it, unmount and burn to the BD disc. Doing this resulted in a BD disk that was not accessable, except by raw reading, like 'dd'. Attempting to mount it generates the error "wrong fs type, bad option, bad superblock on /dev/sr0, missing codepage or helper program, or other error". Reading the man page for 'mkudffs', I found there is a '-m' switch to specify the type of media and it defaults to 'hd'. So I tried to make one with the 'bdr' type but when I tried to loop mount it, it generated the same error mentioned above. So it looks like media type limits prevent using this method. Further searching found that the recommended way to access UDF filesystems on optical media is to use "packet writing". For the life of me I cannot figure out how to make this work. None of the suggestions I've found work with my setup. It may be that my BD drive is too old but before going the route of changing it out, I'd like to know if there's something I've missed in the general process. Thanks, Bob
