Append data to DVD R

I have successfully used growisofs to append content (data / files and folders) to a DVD+R.

=invocation=

general format
the format for composing such a command (line (invocation)) is:

growisofs -speed 2 -M /dev/dvd (mkisofs/genisoimage command line goes here).

The "-speed" switch is optional.

particular example
Here is my particular example:

Executing 'mkisofs -C 16,525312 -M /dev/fd/3 -A myName -sysid WifiSlax 4.7Final -udf -joliet-long -long-rr-time -r errctl=WARN|ALL * -iso-level 2 -N -publisher udf joliet-long -long-rr-time -r -iso-level 2 -N ucs-level 1 -p implicit -pad, right? no charset specified use-fileversion errctl="WARN|ALL *" -use-fileversion -ucs-level 1 -V Econee cPanel backups2013nov -v -v -v -gui -log-file=growisofs-speed3-M_-v-v-v-gui.log.txt -graft-points sears500WD-Temp-econee_whm_cpanels=/mnt/sears/Temp/econee_whm_cpanels/ | builtin_dd of=/dev/dvd obs=32k seek=32832' Warning: creating filesystem that does not conform to ISO-9660. Setting input-charset to 'UTF-8' from locale. 3.01a16 (i686-pc-linux-gnu) re-directing all messages to growisofs-speed3-M_-v-v-v-gui.log.txt /dev/dvd: "Current Write Speed" is 4.1x1352KBps. builtin_dd: 881520*2KB out @ average 3.8x1352KBps /dev/dvd: flushing cache /dev/dvd: closing track /dev/dvd: closing session /dev/dvd: reloading tray
 * 1) growisofs -speed 3 -M /dev/dvd -A 'myName' -sysid 'WifiSlax 4.7Final' -udf -joliet-long -long-rr-time -r errctl="WARN|ALL *" -iso-level 2 -N -publisher 'udf joliet-long -long-rr-time -r -iso-level 2 -N ucs-level 1' -p 'implicit -pad, right? no charset specified use-fileversion errctl="WARN|ALL *" ' -use-fileversion -ucs-level 1 -V 'Econee cPanel backups2013nov' -v -v -v -gui -log-file=growisofs-speed3-M_-v-v-v-gui.log.txt -graft-points sears500WD-Temp-econee_whm_cpanels=/mnt/sears/Temp/econee_whm_cpanels/

=result=

When I query the blkid (information for the block device) of the optical disc, it still shows information about the bootable first track/session which is the (exact) same as before  was run, when there was only one session on the disc.

blkid
/dev/sr0: LABEL="slackelLive_kde-4.10.4-64" TYPE="iso9660"
 * 1) blkid /dev/sr0

initial session was burned using
Note: the initial session (And track) on the disc was burned with:

growisofs -speed 4 -Z /dev/dvd=slackellive-kde-4.10.4-64.iso

Next, I decided to query the disc state (status) (stats) usng dvd+rw-mediainfo  and then cdrdao disk-info and msinfo commands/modes/operations:

dvd+rw-mediainfo
INQUIRY:               [Optiarc ][DVD RW AD-7260S ][1.03] GET [CURRENT] CONFIGURATION: Mounted Media:        1Bh, DVD+R Media ID:             MBIPG101/R05 Current Write Speed:  4.0x1385=5540KB/s Write Speed #0:       16.0x1385=22160KB/s Write Speed #1:       12.0x1385=16620KB/s Write Speed #2:       8.0x1385=11080KB/s Write Speed #3:       6.0x1385=8310KB/s Write Speed #4:       4.0x1385=5540KB/s GET [CURRENT] PERFORMANCE: Write Performance:    4.0x1385=5540KB/s@[0 -> 2295103] Speed Descriptor#0:   03/2295104 R@16.0x1385=22160KB/s W@16.0x1385=22160KB/s Speed Descriptor#1:   03/2295104 R@12.0x1385=16620KB/s W@12.0x1385=16620KB/s Speed Descriptor#2:   00/2295104 R@8.0x1385=11080KB/s W@8.0x1385=11080KB/s Speed Descriptor#3:   00/2295104 R@8.0x1385=11080KB/s W@6.0x1385=8310KB/s Speed Descriptor#4:   00/2295104 R@5.0x1385=6925KB/s W@4.0x1385=5540KB/s READ DVD STRUCTURE[#0h]: Media Book Type:      00h, DVD-ROM book [revision 0] Legacy lead-out at:   2295104*2KB=4700372992 READ DISC INFORMATION: Disc status:          appendable Number of Sessions:   3 State of Last Session: empty "Next" Track:         3 Number of Tracks:     3 READ TRACK INFORMATION[#1]: Track State:          partial/complete Track Start Address:  0*2KB Free Blocks:          0*2KB Track Size:           523264*2KB READ TRACK INFORMATION[#2]: Track State:          partial/complete Track Start Address:  525312*2KB Free Blocks:          0*2KB Track Size:           881520*2KB READ TRACK INFORMATION[#3]: Track State:          blank Track Start Address:  1408880*2KB Next Writable Address: 1408880*2KB Free Blocks:          886224*2KB Track Size:           886224*2KB ROM Compatibility LBA: 0 FABRICATED TOC: Track#1 :             17@0 Track#2 :             17@525312 Track#AA :            17@1406832 Multi-session Info:   #2@525312 READ CAPACITY:         1406832*2048=2881191936
 * 1) dvd+rw-mediainfo /dev/dvd

disk-info
Cdrdao version 1.2.3 - (C) Andreas Mueller  /dev/sr0: Optiarc DVD RW AD-7260S      Rev: 1.03 Using driver: Generic SCSI-3/MMC - Version 2.0 (options 0x0000)
 * 1) cdrdao disk-info /dev/sr0

That data below may not reflect the real status of the inserted medium if a simulation run was performed before. Reload the medium in this case.

CD-RW               : no Total Capacity       : 35:03:64 (157789 blocks, 308/353 MB) CD-R medium         : n/a Recording Speed     : n/a CD-R empty          : no Toc Type             : CD-DA or CD-ROM Sessions            : 2 Last Track          : 2 Appendable          : yes Start of last session: 525312 (116:46:12) Start of new session : 1409030 (313:09:05)

msinfo
Cdrdao version 1.2.3 - (C) Andreas Mueller  /dev/sr0: Optiarc DVD RW AD-7260S      Rev: 1.03 Using driver: Generic SCSI-3/MMC - Version 2.0 (options 0x0000)
 * 1) cdrdao msinfo /dev/sr0

525312,1409030 msinfo: Session is appendable