system independence does not depend on the host system to perform defect management Advantage of UDF 1.5+ over MRW include: more portable, as UDF 1.5+ alone does not need specialized drive hardware to write, and the computer needs neither an MRW driver for a MRW-capable optical drive nor an MRW reader for drives that are incapable of reading MRW natively, reducing software overhead. Operating system support Mount Rainier is implemented natively in Windows Vista and Windows 7. Linux has built-in MRW support since kernel version 2.6.2 (2004). Amiga OS4 supports this natively since the first beta appeared in 2004. Support for reading this format was also added to Mac OS X. Operating systems that don't support MRW natively (notably Windows XP and prior versions) need third-party software to read and write MRW-formatted discs, and these tend to be the same packet writing utilities which allow native UDF filesystems to be written to optical media. Some optical disc software, such as IsoBuster, can support Mount Rainier on non-MR drives. The EasyWrite logo is the marketing symbol created by Philips for CD drives that are Mount Rainier compatible. CD-MRW stands for Compact disc – Mount Rainier Read/Write. References External links Mount Rainier Support in Linux SCSI Computer file systems Optical computer storage media