have a number of LG wh16ns40 and wh14ns40 in different locations
all are labeled as Mdisc enabled.
most images span into the second layer on the platter.
many years of successful burns, most are dual layers,most are 5-6 days each week
at one location began to have large number of verify failures which occur just after the switch to the second layer
had access to that site, changed the drive. site bought new media, verify failures continued. almost 100% fail.
replace drive again, failures continued
brief partial list of sites, where verified burns are almost always successful
media is verbatim dual layer, usually the inkjet style,
which is slighly more expensive than the branded surface
in the usa $68 for 25 inkjet, $66 for branded,most recent prices
about $2.70 per platter
HL-DT-ST BD-RE wh16ns40 firmware 1.00 VERBAT-IMf-000
HL-DT-ST BD-RE WH14NS40 firmware 1.01-A1 VERBAT-IMf-000
this site also has dual layer success, similar to the above
most recent successful burn was using different media
HL-DT-ST BD-RE WH16NS40 1.00 RITEK-DR3-000
the site with consistent failures
WH16NS40 Firmware 1.03 VERBAT-IMf-000
last two drives were SVC code 50
media has been consistently verbatim
conclusion differences, firmware below 1.03 VERIFY dual layer burns
drives with firmware 1.03 do NOT VERIFY (usually) dual layer burns
downloaded 1.02 and 1.01
attempts to downgrade, both produce checksum failures
first two burns this drive, successful dual layer verified
then 2 verify fails, switch to new purchase media
now fails on initail write
snip from last failure
I 10:44:10 Writing Layer 0... (LBA: 0 - 12219391)
I 10:59:45 Writing Layer 1... (LBA: 12219392 - 15204191)
W 11:00:47 Failed to Write Sectors 12791488 - 12791519 - Reason: Write Error
W 11:00:47 Retrying (1 of 20)...
W 11:00:47 Retry Failed - Reason: Invalid Address For Write
...
W 11:00:47 Retry Failed - Reason: Invalid Address For Write
W 12:32:36 Retrying (21)...
W 12:32:36 Retry Failed - Reason: Invalid Field in CDB
W 12:32:47 Retrying (22)...
W 12:32:47 Retry Failed - Reason: Invalid Field in CDB
E 12:32:49 Failed to Write Sectors 12791488 - 12791519 - Reason: Write Error
I 12:32:49 Synchronising Cache...
W 12:32:49 Synchronise Cache Failed! - Reason: Invalid Field in CDB
W 12:33:03 Synchronise Cache Failed! - Reason: Invalid Field in CDB
I 12:33:09 Closing Track...
W 12:33:09 Close Track Failed! - Reason: Invalid Field in CDB
E 12:33:14 Close Track Failed! - Reason: Invalid Field in CDB
I 12:33:14 Finalising Disc...
W 12:33:14 Finalise Disc Failed! - Reason: Invalid Field in CDB
E 12:33:18 Finalise Disc Failed! - Reason: Invalid Field in CDB
E 12:33:18 Failed to Write Image!
I 12:33:18 Exporting Graph Data...
graph file too big to upload
any recommendations ?
change drive brand, or media. or both ?
have one new drive, can return that and get different brand
btw, grateful user, have made contributions to imgburn.
thanks in advance