Added more info about DVD+RW

cdrskin/README

@@ -379,6 +379,25 @@ Speed is counted in DVD units (i.e. 1x = 1,385,000 bytes/second). Currently
 there is no difference between -sao and -tao. If ever, then -tao will be the
 mode which preserves the current behavior.
 
+For DVD+RW, -msinfo alone would not be enough to perform appending of an ISO
+filesystem. The filesystem driver will need a hint to find the start of the
+most recent session. For example put an ISO filesystem at address 1 GB:
+  mkisofs -C 0,524288 ... | \
+  cdrskin dev=/dev/sr0 -v fs=32m -eject speed=4 write_start_address=524288s -
+The superuser may then do:
+  mount -t iso9660 -o ro,sbsector=524288 /dev/sr0 /mnt
+Note: On my linux-2.4.21-215 mount works only with sbsector <= 337920 (660 MB).
+To extend a filesystem already existing at address 0
+  mkisofs -C 0,524288 -M /dev/sr0 ... | cdrskin dev=/dev/sr0 ...
+Record the number 524288 for usage as first number with -C at the next
+extension:
+  mkisofs -C 524288,1000000 ... | cdrskin write_start_address=1000000s ...
+
+Program growisofs can append to an ISO filesystem on DVD+RW by additionally
+manipulating the first session. cdrskin does not want to get involved so deep
+into the format of the burned data. Be advised to use growisofs for the
+task of maintaining extendable ISO-Filesystems on DVD+RW. 
+
 
                         Special compilation variations
 

cdrskin/cdrskin.1

@@ -160,6 +160,7 @@ original cdrecord by Joerg Schilling:
 .TP
 .BI \-atip
 Retrieve some info about media state. With CD-RW print "Is erasable".
+With DVD media print "book type:" and a media type text.
 .TP 
 .BI \-audio
 Announces that the subsequent tracks are to be burned as audio.
@@ -434,6 +435,10 @@ interpretation of eventual startup files. See section FILES below.
 .TP
 .BI \--single_track
 Accept only the last argument of the command line as track source address.
+.TP 
+.BI write_start_address= byte_offset
+Set the address on media where to start writing the track. DVD+RW only for
+now. byte_offset must be aligned to 2 KB blocks. Better is 32 kB alignment.
 .PP
 Alphabetical list of options which are only intended for very special
 situations and not for  normal use:
@@ -630,7 +635,7 @@ Formatting track sources for cdrskin:
 .BR star (1)
 .br
 .TP
-Other CD burn programs:
+Other CD/DVD burn programs:
 .br
 .BR cdrecord (1),
 .BR wodim (1)

cdrskin/convert_man_to_html.sh

@@ -47,6 +47,7 @@ then
   -e 's/In general there are two types of tracks: data and audio./\&nbsp;<BR>In general there are two types of tracks: data and audio./' \
   -e 's/While audio tracks just contain a given/\&nbsp;<BR>While audio tracks just contain a given/' \
   -e 's/<b>Recordable CD Media:<\/b>/\&nbsp;<BR><b>Recordable CD Media:<\/b>/' \
+  -e 's/<b>Recordable DVD Media:<\/b>/\&nbsp;<BR><b>Recordable DVD Media:<\/b>/' \
   -e 's/<b>Drive preparation and addressing:<\/b>/\&nbsp;<BR><b>Drive preparation and addressing:<\/b>/' \
   -e 's/If you only got one CD capable drive/\&nbsp;<BR>If you only got one CD capable drive/' \
   -e 's/^Alphabetical list of options/\&nbsp;<BR>Alphabetical list of options/' \