On Fri, 2004-09-10 at 13:48, Bryan J. Smith wrote:
> Disc-At-Once (DAO) is how DVD-Rs should be written for absolute
> compatibility ... It is a byte-by-byte (character device) "record."
> DVD+RW and DVD+R don't seem to support DAO ...
> TAO is what "packet writing" uses ...
Now understand you _can_ use Track-At-Once (TAO) like DAO for
"recording" (character) as well. In fact, that's typically how I do my
DVD-R _data_ discs.
It works completely with buffer underrun, just writes the ISO9660 Yellow
Book track, etc...
It's just that you can't use DAO for "packet writing" (block). TAO and,
I believe Session-At-Once (SAO) as well, can use either devices. Of
course, most consumer players do _not_ like multi-session discs, or
anything that doesn't "close" the disc as a single session.
I can't tell if it's the character v. block access, or the way DVD-R is
written by Sony/Philips v. DVD Consortium firmware, but the latter has
been far more compatible for me with older drives. In those cases, I
have _only_ used byte-by-byte "recording" character with DAO/TAO.
The exception being, of course, when I use DVD-RAM, which is a direct
block access with an entirely different command set.
-- Compatibility and update matrix of Red Hat(R) distributions: http://www.vaporwarelabs.com/files/temp/RH-Distribution-FAQ-3.html http://www.vaporwarelabs.com/files/temp/RH-Distribution-FAQ-4.html ------------------------------------------------------------------ Bryan J. Smith, E.I. b.j.smith at ieee.org----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.
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