On Fri, 2025-01-17 at 23:37 -0800, Bob McGowan wrote: > 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
And of course, I forgot to mention any details about my environment. I am running Debian 12.9 which is up to date, kernel (6.5.0-0.deb12.4- amd64). The DB burner is an LG and is quite old, as in maybe 15 years. The system has 16GB ram and an AMD Ryzen 3 1200 Quad-Core Processor on a relatively newer ASUS motherboard. Thanks, Bob
