thanks for flying cdrskin.
> Can the defect management system have something to do with it?
> How does the defect management even work?
If you did not format the BD-R before using it with cdrskin, then
it will not have used Defect Management.
You typically recognize it at burn time by only getting half the
nominal speed. It checkreads the written data as long as they
are still in the drive buffer. In case of error or poor quality
it will normal retry the write operation. As last resort it will
employ a replacement block from the Spare Area.
Such replacements cause a long head move at read time.
If many of them exist, the drive will clonk and moan. Not nice.
To my experience, BD works better without Defect Management.
If the medium needs it, then it will become quite unbearable
anyway. And i suspect that media fail even earlier than with
plain old writing.
BD-R can be formatted only while they are blank. E.g. by:
cdrskin -v dev=/dev/sr0 blank=format_if_needed
You can determine whether a BD-R is already formatted by:
cdrskin dev=/dev/sr0 --list_formats
Formatted ones will report a BD Spare Area:
BD Spare Area: 0 blocks consumed, 196608 blocks available
Unformatted BD-R will not show this info.
It is possible to format BD-RE to 0-sized Spare Area by choosing
the largest format that gets offered by --list_formats.
Formatted BD media can be forced to avoid Defect management
by drskin option stream_recording=on
> Anyone have similar scans?
I recently tested whether qpxtool plugin “liteon” can handle my BD-5300S
(and a user’s iHS112). It works roughly but needs solid work by a skilled
I noticed that the final test samples of my drive always have “PIE” values
over 9700 and “PIF” value of 768. When forcing those last samples to 0,0
i got maximum values of LDC and BIS errors in the range that can be seen
on screenshots of Opti Drive Control.
This was with BD-R media. With BD-RE i saw many intermediate spikes of
"PIE"/LDC > 5000. Regrettably i do not know the theoretical maximum
for LDC and BIS. So i cannot tell whether these are real error
numbers or whether some of the numbers’ high bits are flags which
indicate a particular condition.
Have a nice day