Happy holidays, i experience a problem when burning dual layer DVD. When i put an empty dual disk in the /var/log/messages reports: Dec 30 16:21:51 server kernel: Buffer I/O error on device sr0, logical block 0 Dec 30 16:21:51 server kernel: sr 4:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Dec 30 16:21:51 server kernel: sr 4:0:0:0: [sr0] Sense Key : Illegal Request [current] Dec 30 16:21:51 server kernel: sr 4:0:0:0: [sr0] Add. Sense: Logical block address out of range Dec 30 16:21:51 server kernel: sr 4:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00 Dec 30 16:21:51 server kernel: Buffer I/O error on device sr0, logical block 0 Dec 30 16:47:06 server kernel: cdrom: This disc doesn't have any tracks I recognize! execution of growisofs -Z /dev/dvd -R ./* attempted over 3 disks returned the same error: 52.10% done, estimate finish Sun Dec 30 17:05:41 2012 :-? the LUN appears to be stuck writing LBA=20a250h, keep retrying in 145ms :-? the LUN appears to be stuck writing LBA=20a250h, keep retrying in 145ms :-? the LUN appears to be stuck writing LBA=20a250h, keep retrying in 145ms :-[ WRITE@LBA=20a250h failed with SK=3h/WRITE ERROR]: Input/output error :-( write failed: Input/output error where growisofs version reports: growisofs -version * growisofs by <[log in to unmask]>, version 7.1, front-ending to mkisofs: mkisofs 2.01 is not what you see here. This line is only a fake for too clever GUIs and other frontend applications. In fact, this program is: genisoimage 1.1.9 (Linux) last time i tried to burn dual disk was quite a few years ago. At that time Robert helped me out by pointing to OSS extensions project - http://crashrecovery.org/oss-dvd.html any advise is welcomed. needless to say that all other disks are been recorded without problems for years ( R, RW)