Comment 11 for bug 1458230

Hi,

> If my experience is
> similar, in XP, I will buy a different brand of BD-R, and, if that makes
> little difference, try to reject the drive.

I am curious about the outcome.

Just for the records resp. future use:

Formatting BD-R and using it with Defect Management:

  growisofs -Z /dev/sr0=...iso

  cdrskin dev=/dev/sr0 -v padsize=0 -multi fs=64m \
          blank=format_if_needed \
          ...iso

  xorrecord dev=/dev/sr0 -v padsize=0 -multi fs=64m \
          blank=format_overwrite \
          ...iso

Not formatting BD-R and thus not using Defect Management:

  growisofs -use-the-force-luke=spare=none -Z /dev/sr0=...iso

  cdrskin dev=/dev/sr0 -v padsize=0 -multi fs=64m ...iso

  xorrecord dev=/dev/sr0 -v padsize=0 -multi fs=64m ...iso

Formatting without immediate writing:

  dvd+rw-format /dev/sr0

  cdrskin dev=/dev/sr0 -v blank=format_overwrite

  xorriso -outdev /dev/sr0 -format fast

Writing to formatted BD-R without Defect Management:

  cdrskin dev=/dev/sr0 -v padsize=0 -multi fs=64m \
          stream_recording=on \
          ...iso

  xorrecord dev=/dev/sr0 -v padsize=0 -multi fs=64m \
          stream_recording=on \
          ...iso

Reasoning for change proposals with cdrskin and xorriso:

The extended verbosity of cdrskin -v -v seems not needed.
A single -v allows important messages and progress messages.

padsize=300k is needed only for CD TAO in order to work
around a traditional bug in the Linux kernel at read time.
BD-R cannot trigger that bug. So i propose padsize=0.

speed=10 and --adjust_speed_to_drive are options for special
occasions. Best is to let the drive decide about speed.

xorrecord --grow_overwriteable_iso is only useful with
overwritable media, e.g. with BD-RE and even there one
should consider to use native xorriso instead. It is not
applicable to BD-R and thus ignored.

blank=as_needed is not very appropriate for BD-R either.
It will assert that the medium is blank, nevertheless.

A larger fifo will help with achieving full nominal speed.
After all, 64 MB are only about 1.5 seconds at 10x BD speed.

Have a nice day :)

Thomas