System
-----------------------
K3b Version: 1.0.4

KDE Version: 3.5.8
QT Version:  3.3.8
Kernel:      2.6.23-gentoo
Devices
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HL-DT-ST DVDRAM GSA-4082N CR03 (/dev/hdb, ) [CD-R, CD-RW, CD-ROM, DVD-ROM, DVD-R, DVD-RW, DVD-R DL, DVD+R, DVD+RW, DVD+R DL] [DVD-ROM, DVD-R Sequential, DVD-R Dual Layer Sequential, DVD-RAM, DVD-RW Restricted Overwrite, DVD-RW Sequential, DVD+RW, DVD+R, DVD+R Dual Layer, CD-ROM, CD-R, CD-RW] [SAO, TAO, RAW, SAO/R96P, SAO/R96R, RAW/R16, RAW/R96P, RAW/R96R, Restricted Overwrite]

Burned media
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DVD+RW

K3bIsoImager
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mkisofs print size result: 423 (866304 bytes)
Pipe throughput: 866304 bytes read, 866304 bytes written.

Used versions
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mkisofs: 2.1.1a34
growisofs: 7.0

growisofs
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WARNING: /dev/hdb already carries isofs!
About to execute 'builtin_dd if=/dev/fd/0 of=/dev/hdb obs=32k seek=0'
/dev/hdb: "Current Write Speed" is 4.1x1352KBps.
/dev/hdb: flushing cache
/dev/hdb: stopping de-icing
/dev/hdb: writing lead-out

growisofs command:
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/usr/bin/growisofs -Z /dev/hdb=/dev/fd/0 -use-the-force-luke=notray -use-the-force-luke=tty -use-the-force-luke=tracksize:423 -speed=4 -use-the-force-luke=bufsize:32m 

mkisofs
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/usr/bin/mkisofs: Warning: Cannot add inode hints with -no-cache-inodes.
/usr/bin/mkisofs: Warning: Cannot add inode hints with -no-cache-inodes.
/usr/bin/mkisofs: Value too large for defined data type. File /home/noxon/downloads/Azureus/I Am Legend 2007 720p Blu-Ray DTS x264-CtrlHD/I Am Legend 2007 720p Blu-Ray DTS x264-CtrlHD.mkv is too large for current mode - ignoring
/usr/bin/mkisofs: Value too large for defined data type. File /home/noxon/downloads/Azureus/I Am Legend 2007 720p Blu-Ray DTS x264-CtrlHD/I Am Legend 2007 720p Blu-Ray DTS x264-CtrlHD.mkv is too large for current mode - ignoring
423
/usr/bin/mkisofs: Warning: Cannot add inode hints with -no-cache-inodes.
/usr/bin/mkisofs: Value too large for defined data type. File /home/noxon/downloads/Azureus/I Am Legend 2007 720p Blu-Ray DTS x264-CtrlHD/I Am Legend 2007 720p Blu-Ray DTS x264-CtrlHD.mkv is too large for current mode - ignoring
Total translation table size: 0
Total rockridge attributes bytes: 169
Total directory bytes: 238
Path table size(bytes): 10
Max brk space used 0
423 extents written (0 MB)

mkisofs calculate size command:
-----------------------
/usr/bin/mkisofs -gui -graft-points -print-size -quiet -volid I Am Legend 2007 720p -volset  -appid K3B THE CD KREATOR (C) 1998-2006 SEBASTIAN TRUEG AND THE K3B TEAM -publisher  -preparer  -sysid LINUX -volset-size 1 -volset-seqno 1 -sort /tmp/kde-noxon/k3bBei89b.tmp -rational-rock -hide-list /tmp/kde-noxon/k3bx4AZHb.tmp -joliet -joliet-long -hide-joliet-list /tmp/kde-noxon/k3bYpW0sc.tmp -no-cache-inodes -udf -full-iso9660-filenames -iso-level 2 -path-list /tmp/kde-noxon/k3bOWlO5a.tmp 

mkisofs command:
-----------------------
/usr/bin/mkisofs -gui -graft-points -volid I Am Legend 2007 720p -volset  -appid K3B THE CD KREATOR (C) 1998-2006 SEBASTIAN TRUEG AND THE K3B TEAM -publisher  -preparer  -sysid LINUX -volset-size 1 -volset-seqno 1 -sort /tmp/kde-noxon/k3bPBRTEb.tmp -rational-rock -hide-list /tmp/kde-noxon/k3b8Ta27b.tmp -joliet -joliet-long -hide-joliet-list /tmp/kde-noxon/k3bF5AMrb.tmp -no-cache-inodes -udf -full-iso9660-filenames -iso-level 2 -path-list /tmp/kde-noxon/k3balbPcb.tmp