I'm addressing a common error that appears on rewriteable DL blurays, that start with the second layer usually with the first sector or set of sectors here.
The error looks like this:
I 11:26:32 Verifying Layer 0... (LBA: 0 - 12219391)
I 11:47:48 Verifying Layer 1... (LBA: 12219392 - 21538335)
W 11:47:59 Failed to Read Sectors 12219392 - 12219423 - Reason: L-EC Uncorrectable Error
W 11:48:08 Failed to Read Sector 12219392 - Reason: L-EC Uncorrectable Error
Similar issues, that may have the same causes, are here:
I don't have a root explanation why is this happening but I'll share my experience on that.
I 20:56:39 -> Drive 1 - Info: ASUS BW-16D1HT 1.01 (K:) (SATA)
First media was:
I21:02:19 Source Media Type: BD-RE (Disc ID: VERBAT-IM1-000), about 10 of them. They worked flawlessly until I started to rewrite them, when some iso's gave the error described.
I suspected the drive unit, so the vendor replaced it as faulty, giving me a new one with 3.0 firmware.
I 18:40:57 -> Drive 1 - Info: ASUS BW-16D1HT 3.00 (H:) (SATA)
The big surprise was that the errors still come as usual. After trials I found that a simple but loooong full erase before writing result in a good copy.
So the first rule: Always run a full erase before writing!
Sadly, later, I found that certain images won't give up with a good copy whatever full erases done or measures taken. So, reading some posts here, I acquired
I 09:23:59 Destination Media Type: BD-RE (Disc ID: MEI-T01-001) that seems to work flawlessly testing with the prior images that weren't working on Verbatim. The media Is Panasonic from ebay.
So the second rule: Try another media!
It appears that the drive unit is not important as the error appears for different units. The media may be important as different media may give different results, but I think there is more than that, concerning a combination of BDRE standard implementation, the image content you try to write and the media type.
My advice may not be too much, but if I had known these it would've saved me a lot of time.
Haven't tried yet to write on Panasonic without prior full erase.
Edited by blueq, 11 June 2017 - 10:08 AM.