A Plextor PX-750A on a Linux system has made many DVD+R DL coasters while trying to burn an 8GB DVD .iso file with growisofs and the Schilling cdrecord program.
I tried growisofs first:
growisofs --version * growisofs by <firstname.lastname@example.org>, version 7.0, front-ending to genisoimage: genisoimage 1.1.8 (Linux)
The command line was:
growisofs -dvd-compat -Z /dev/sr1=SUU_14.03.00_A00.iso
Removal of the
-dvd-compat option was also attempted.
Schilling cdrtools was also tried:
Cdrecord-ProDVD-ProBD-Clone 3.00 (i686-pc-linux-gnu) Copyright (C) 1995-2010 Jörg Schilling
The command line was:
/usr/local/bin/cdrecord -v dev=ATAPI:1,0,0 SUU_14.03.00_A00.iso
In both cases, the burn aborts half way through as though it writes a layer and croaks when it should move to the second layer.
4275175424/8434493440 (50.7%) @1.6x, remaining 22:03 RBU 100.0% UBU 94.4% :-[ WRITE@LBA=1fdb40h failed with SK=3h/ASC=0Ch/ACQ=00h]: Input/output error :-( write failed: Input/output error
Track 01: 4205 of 8043 MB written (fifo 99%) [buf 97%] 2.4x./usr/local/bin/cdrecord: Input/output error. write_g1: scsi sendcmd: no error CDB: 2A 00 00 20 DA 10 00 00 10 00 status: 0x2 (CHECK CONDITION) Sense Bytes: 70 00 03 00 00 00 00 0A 00 00 95 00 0C 00 00 00 00 00 Sense Key: 0x3 Medium Error, Segment 0 Sense Code: 0x0C Qual 0x00 (write error) Fru 0x0 Sense flags: Blk 0 (not valid) cmd finished after 0.019s timeout 200s write track data: error after 4409294848 bytes /usr/local/bin/cdrecord: A write error occured. /usr/local/bin/cdrecord: Please properly read the error message above.
Looking at the media after the burn, it appears to have written data from the inside to the outside - giving the impression that it wrote one layer fully and then errored out when that layer ended. In several attempts, each failure is at about 50% of the way through the burn of:
$ ls -lh SUU_14.03.00_A00.iso -rw-rw-r-- 1 user group 7.9G 2014-05-14 07:53 SUU_14.03.00_A00.iso
Begin 2014/05/23 edit:
The cdrecord man page says:
Cdrecord functional options ... driveropts=option list ... layerbreak Switch a drive with DVD-R/DL medium into layer jump recording recording mode and use automatic layer-break position setup. By default, DVD-R/DL media is written in sequential recording mode that completely fills up both layers. layerbreak=value Set up a manual layer-break value for DVD-R/DL and DVD+R/DL. The specified layer-break value must not be set to less than half of the recorded data size and must not be set to more than the remaining Layer 0 size of the medium. The manual layer-break value needs to be a mul- tiple of the ECC sector size which is 16 logical 2048 byte sectors in case of DVD media and 32 logical 2048 byte sectors in case of HD-DVD or BD media. Cdrecord does not allow to write DL media in case that the total amount of data is less then the Layer 0 size of the medium except when a manual layer-break has been specified by using the layerbreak=value option.
Use of layerbreak without a manually computed breakpoint gives:
cdrecord -v driveropts=layerbreak dev=ATAPI:1,0,0 SUU_14.03.00_A00.iso ... cdrecord: Bad layer break value ''. ...
After some research, I found a patch to an older cdrecord that contained an "optimal layer break computation". With a little experimentation, I found that I could compute the "optimal layer break" in a shell:
echo -e "a = $(isosize SUU_14.03.00_A00.iso)\nb = a / 2048 / 2\nb - 1 + 16 - ( b - 1 ) % 16\n" | bc
This gave a layerbreak value of 2059216. In fact, for grins, I tried adjusting the value up and down. For some layerbreak values (like 2059215) cdrecord would report:
cdrecord: Layer break at 2059215 is not properly aligned.
Hopeful, I tried:
cdrecord -v driveropts=layerbreak=2059216 dev=ATAPI:1,0,0 SUU_14.03.00_A00.iso
And still got a coaster and write error:
Track 01: 4205 of 8043 MB written (fifo 99%) [buf 97%] 2.4x./usr/local/bin/cdrecord: Input/output error. write_g1: scsi sendcmd: no error CDB: 2A 00 00 20 DB 60 00 00 10 00 status: 0x2 (CHECK CONDITION) Sense Bytes: 70 00 03 00 00 00 00 0A 00 00 95 00 0C 00 00 00 00 00 Sense Key: 0x3 Medium Error, Segment 0 Sense Code: 0x0C Qual 0x00 (write error) Fru 0x0 Sense flags: Blk 0 (not valid) cmd finished after 0.022s timeout 200s write track data: error after 4409982976 bytes /usr/local/bin/cdrecord: A write error occured. /usr/local/bin/cdrecord: Please properly read the error message above.
End of 2014/05/23 edit.
This issue occured on a server where there were no GUI tools installed. I am looking for a way to burn dual layer DVDs from the command-line.