Wrote down what was learned about DVD-RAM formatting
This commit is contained in:
parent
13fa08e3b7
commit
ebf5cd351f
@ -1,11 +1,11 @@
|
||||
libburnia-project.org Optical Media Rotisserie Recipes as of August 2007
|
||||
libburnia-project.org Optical Media Rotisserie Recipes as of April 2008
|
||||
|
||||
Content:
|
||||
- TAO Multi-Session CD Cookbook (CD-R, CD-RW)
|
||||
- SAO CD Cookbook (CD-R, CD-RW, pure audio or pure data only)
|
||||
- Overwriteable DVD Cookbook (DVD-RAM, DVD+RW, DVD-RW)
|
||||
- Sequential DVD-R[W] Cookbook
|
||||
- DVD+R Cookbook
|
||||
- DVD+R[/DL] Cookbook
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
TAO Multi-Session CD Cookbook
|
||||
@ -403,7 +403,8 @@ correctness of Pre-gap and Post-gap would become evident.
|
||||
-------------------------------------------------------------------------------
|
||||
Inspired by Andy Polyakov's http://fy.chalmers.se/~appro/linux/DVD+RW/tools ,
|
||||
backed by reading mmc5r03c.pdf from http://www.t10.org/ftp/t10/drafts/mmc5/
|
||||
and by experiments with drives NEC ND-4570A and LG GSA-4082B.
|
||||
and by experiments with drives NEC ND-4570A, LG GSA-4082B, PHILIPS SPD3300L.
|
||||
BD-RE experiments done by Giulio Orsero on LG BE06LU10.
|
||||
|
||||
For libburnia-project.org by Thomas Schmitt <scdbackup@gmx.net>
|
||||
|
||||
@ -416,18 +417,20 @@ DVD-RAM 0012h
|
||||
DVD-RW Restricted Overwrite 0013h
|
||||
DVD-RW Sequential Recording 0014h (i.e. unformatted)
|
||||
DVD+RW 001Ah
|
||||
BD-RE 0043h (writing tested, formatting not tested)
|
||||
|
||||
A short compilation of the write model:
|
||||
- Overwriting in general
|
||||
|
||||
The recipes described here are depending on formatting state:
|
||||
- DVD-RAM, fully formatted DVD+RW or DVD-RW
|
||||
- DVD-RAM, fully formatted DVD+RW, DVD-RW, BD-RE
|
||||
- Unformatted DVD+RW
|
||||
- Partly formatted DVD+RW
|
||||
- Unformatted DVD-RW
|
||||
- Partly formatted DVD-RW
|
||||
- Intermediate state DVD-RW
|
||||
|
||||
- DVD-RAM and BD-RE formatting
|
||||
- DVD-RAM and BD-RE speed tuning
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
Overwriting in general :
|
||||
@ -444,7 +447,7 @@ Optimal performance is promised without any speed setting. But my experiments
|
||||
showed that SET STREAMING values persist after media change.
|
||||
|
||||
In the formatted area of the media, coarse random access is possible.
|
||||
For DVD-RAM and DVD+RW write addresses and data size need to be aligned
|
||||
For DVD-RAM, DVD+RW, BD-RE write addresses and data size need to be aligned
|
||||
to 2 KiB. For DVD-RW alignment has to be 32 KiB. Within these limitations
|
||||
the write address is at the discretion of the sending program.
|
||||
Just use 2Ah WRITE to send data.
|
||||
@ -483,9 +486,12 @@ software did anything wrong.
|
||||
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
DVD-RAM, fully formatted DVD+RW or DVD-RW :
|
||||
DVD-RAM, fully formatted DVD+RW, DVD-RW, BD-RE :
|
||||
|
||||
Full format is the natural state of DVD-RAM.
|
||||
Full format is the natural state of DVD-RAM.
|
||||
|
||||
BD-RE are sold unformatted and need to be fully formatted first.
|
||||
See paragraph about DVD-RAM and BD-RE formatting below.
|
||||
|
||||
DVD+RW reaches this state if Background Formatting is allowed to finish without
|
||||
being stopped by 5Bh CLOSE TRACK SESSION.
|
||||
@ -671,6 +677,79 @@ of Intermediate state by 5Bh CLOSE TRACK SESSION with Close Function 010b.
|
||||
(mmc5r03c.pdf 6.3.3.2.3)
|
||||
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
DVD-RAM and BD-RE formatting :
|
||||
|
||||
Although DVD-RAM usually are sold formatted, there may still arise the wish
|
||||
to adjust formatting.
|
||||
BD-RE are sold unformatted and need to be formatted prior to usage.
|
||||
|
||||
Two format types are relevant for DVD-RAM : 00h and 01h.
|
||||
00h offers the default size format and usually a maximum payload size format.
|
||||
Even with that maximum size payload there is hardware defect management.
|
||||
(mmc5r03c.pdf 6.5.4.2.1.2)
|
||||
01h allows to convert payload capacity into spare blocks for defect
|
||||
managment. There is no way to increase payload capacity by format 01h.
|
||||
(mmc5r03c.pdf 6.5.4.2.2.1)
|
||||
|
||||
With BD-RE there are three format types : 00h, 30h and 31h.
|
||||
00h offers the default size format.
|
||||
30h offers several sizes with defect management. Usually there are three
|
||||
size th choose: #1: default size, #2: maximum spare area, #3: minimal spare.
|
||||
31h offers a single size and disables defect management. This has the side
|
||||
effect to speed up writing to nominal speed.
|
||||
(mmc5r03c.pdf 6.5.4.2.15, 6.24.3.3, Table 472)
|
||||
|
||||
Only format sizes from the list of format descriptors are permissible
|
||||
for DVD-RAM. The format list can be obtained by 23h READ FORMAT CAPACITIES.
|
||||
It also includes a description of the current formatting state.
|
||||
(mmc5r03c.pdf 6.24, 6.24.3.2, 6.24.3.3)
|
||||
|
||||
Formatting is done by command 04h FORMAT UNIT. Its data payload consists
|
||||
of a Format List Header and a Format Descriptor. It is advisable to set
|
||||
the Immed bit and the FOV bit in header byte number 1. The descriptor should
|
||||
be a copy of a descriptor from 23h READ FORMAT CAPACITIES.
|
||||
(mmc5r03c.pdf 6.5, 6.5.3.2, 6.5.3.3)
|
||||
With nearly all formats Sub-type should be set to 0. But with BD-RE formats
|
||||
30h and 31h the Sub-type selects the certification mode.
|
||||
Usable with 30h seem 10b Full Certification and 11b Quick Certification.
|
||||
Usable with 31h seem also 00b Quick Reformat and 01b No Certification.
|
||||
(mmc5r03c.pdf 6.5.4.2.15.1)
|
||||
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
DVD-RAM and BD-RE tuning :
|
||||
|
||||
A special aspect of DVD-RAM and BD-RE is their low speed with write operations,
|
||||
which usually is only half than the nominal speed of media and drive.
|
||||
This is blamed to the automatic checkreading which happens ifor managing
|
||||
eventual defects.
|
||||
|
||||
Defect management of BD-RE can be disabled by format type 31h. See above.
|
||||
There is no drive known yet which would apply command 2Ah WRITE10 to DVD-RAM
|
||||
with full speed.
|
||||
|
||||
The only known way to get full speed from DVD-RAM or BD-RE with enabled defect
|
||||
management is the use of AAh WRITE12 with Streaming Bit set to 1.
|
||||
(mmc5r03c.pdf 6.45)
|
||||
With some DVD-RAM drives this fails if a write buffer is not full 32 kB.
|
||||
With the tested BD-RE ione has to write write full 64 kB buffers.
|
||||
|
||||
Although it seems not optimal, this is specified not only to disable the
|
||||
cumbersome checkread but also to ignore known defects and to write data
|
||||
to these defective addresses.
|
||||
(mmc5r03c.pdf 4.8.5)
|
||||
So the speed-up is only advisable as long as the media are free of
|
||||
incorrectable errors.
|
||||
|
||||
Caveat:
|
||||
MMC-5 does not guarantee AAh WRITE12 to work on DVD-RAM or BD-RE at all.
|
||||
None of the features of profiles 0012h and 0043 promises the existence of
|
||||
AAh WRITE12.
|
||||
Nevertheless it worked on all tested drives is proper alignment was observed.
|
||||
(mmc5r03c.pdf 5.4.13, 6.45)
|
||||
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
@ -990,7 +1069,7 @@ close session if multi-session is demanded.
|
||||
-------------------------------------------------------------------------------
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
DVD+R Cookbook
|
||||
DVD+R[/DL] Cookbook
|
||||
-------------------------------------------------------------------------------
|
||||
Inspired by reading mmc5r03c.pdf from http://www.t10.org/ftp/t10/drafts/mmc5/
|
||||
backed by Andy Polyakov's http://fy.chalmers.se/~appro/linux/DVD+RW/tools ,
|
||||
@ -1006,7 +1085,7 @@ DVD+R/DL 002bh
|
||||
|
||||
- About empty, appendable and finalized DVD+R
|
||||
- Writing a Pseudo Session to DVD+R
|
||||
- >>> Hearsay about DVD+R/DL (Dual Layer) :
|
||||
- DVD+R/DL (Dual Layer
|
||||
|
||||
The following two chapters of the Sequential DVD-R[W] Cookbook are valid for
|
||||
DVD+R media too:
|
||||
@ -1100,9 +1179,11 @@ by closing them already after the first session.
|
||||
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
Hearsay about DVD+R/DL (Dual Layer) :
|
||||
DVD+R/DL (Dual Layer) :
|
||||
|
||||
>>>
|
||||
libburn treats DL media just like their single layer equivalents.
|
||||
This seems to work fine for DVD+R/DL, according to a report by nightmorph
|
||||
in http://libburnia-project.org/ticket/13 .
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user