Re: Can t blank BD-RE disc?
Hi,
> Does the following make any sense at all?
Only in part. :))
Your media should be usable in growisofs or
libburn without explicit preparations.
They should be still ok after the dvd+rw-format
runs. Just try to use them.
BD-RE are like DVD-RAM usable as random access
read-write disks. (DVD+RW and formatted DVD-RW
alike.)
They need to get formatted before use. Thus the
term "blank" makes sense.
But after being formatted, one can write and read
to them like to a giant floppy disk.
So "blanking" in the sense of re-use is not
applicable to BD-RE.
growisofs and libburn format blank BD-RE
automatically on the first try to write them.
So it is not needed to format them explicitely
unless one wants a non-default size.
Size may be varied by reserving more or less
spare blocks.
This command was appropriate for new BD-RE:
> $ dvd+rw-format -format /dev/sr1
> * BD/DVD±RW/-RAM format utility by <appro@fy.chalmers.se>, version 7.1.
> * 24.8GB BD media detected.
> * formatting .
But this outcome is not appropriate:
> :-[ FORMAT UNIT failed with SK=5h/INVALID FIELD IN PARAMETER
> LIST]: Input/output error
Well, the media state looks ok so far:
> $ dvd+rw-mediainfo /dev/sr1
> Mounted Media: 43h, BD-RE
> Write Speed #0: 12.0x4495=53940KB/s
(Gosh ! Is that true ?)
> Write Speed #1: 2.0x4495=8990KB/s
> Speed Descriptor#0: 00/12088319 R@2.0x4495=8990KB/s W@2.0x4495=8990KB/s
(Probably not)
> formatted: 12088320*2048=24756879360
The default size. About 256 MB of spare blocks.
This command made few sense but was obviously
gracefully defaulted to -format:
> $ dvd+rw-format -blank /dev/sr1
Next you were kept from re-formatting. I do not
know how often one may format a media.
Half a dozen size changes are ok, though.
Re-formatting is likely to kill data on the
media.
> $ dvd+rw-format /dev/sr1
> * BD/DVD±RW/-RAM format utility by <appro@fy.chalmers.se>, version 7.1.
> * 24.8GB BD media detected.
> - media is not blank
> - you have the option to re-run dvd+rw-format with:
> -format=full to perform (lengthy) Full Certification;
> -ssa[=none|default|max|XXX[GM]]
> to eliminate or adjust Spare Area.
Have a nice day :)
Thomas
Reply to: