Writing to BD-RE and BD-R

Mac OS

newfs_udf

You can create a UDF 2.50 formatted disc with Mac OS and write files to it with Finder, cp or other tools.

Usage 💿

where rdisk2 is your BD drive

newfs_udf -r 2.50 /dev/rdisk2 -v BDUDF

To prevent the super-clever Mac OS from writing useless files and directories to your disc, execute the following commands:
(su is required to remove .Trashes)

where BDUDF is your Blu-ray Disc/Volume

sudo su
cd /Volumes/BDUDF
touch .fseventsd/no_log
rm .fseventsd/fseventsd-uuid
rm -fR .Spotlight-V100
touch .Spotlight-V100
rm -fR .Trashes
touch .Trashes

Warning ⚠️

Writing (large) files to your BD can damage the UDF file system, which results in input/output errors, a crashing Disk Utility and kernel panics.

Toast 11 Titanium

Toast 11 is capable of writing Blu-ray Discs (without the High-Def/Blu-ray Disc Plug-in).

Dynamic Writing is quite useless as it creates a UDF 2.01 formatted disc.

Windows

Windows Explorer (Windows 7)

Right click on BD drive, select format and UDF 2.50 for file system.