On Tue, Jul 30, 2013 at 9:58 AM, Thomas Schmitt <scdbackup@gmx.net> wrote:

Hi,

Richard Shaw wrote:
> When I use dvd+rw-mediainfo I see
> several different capacaities. Obviously if you use the formatting
> with defect management then you're going to loose some capacity, but
> the output is not clear which one is the correct.

You probably mean something like this:

Mounted Media: 41h, BD-R SRM
Media ID: CMCMAG/BA5
...
READ FORMAT CAPACITIES:
unformatted: 12219392*2048=25025314816
00h(3000): 11826176*2048=24220008448
32h(0): 11826176*2048=24220008448
32h(0): 5796864*2048=11871977472
32h(0): 12088320*2048=24756879360

It is an overview of sizes from which you could choose.
00h and 32h are the Format Codes for the SCSI command FORMAT UNIT.
(3000) is the size of the Spare Area in hexadecimal numbers
counting clusters of 64 KiB. (Cough.)
For some reason my burners report (0) with the format code 32h by
which i could choose a particular payload size. I read different
prescriptions in MMC-5 specs. Shrug.

So the "unformatted" one is pretty obvious which explains my first failure... but then I tried reducing the image using the 24756879360 (24.8GB) size, which still failed. Should I assume then that failure was because growisofs reserved more spare space in its formatting than I allowed for by my image size?

If I use 24220008448 when creating my image should my burns always succeed unless I reserve more than a default amount of space for defect management?

xorriso would report by
xorriso -outdev /dev/sr0 -list_formats

a similar list
Format idx 0 : 00h , 11826176s , 23098.0 MiB
Format idx 1 : 32h , 11826176s , 23098.0 MiB
Format idx 2 : 32h , 5796864s , 11322.0 MiB
Format idx 3 : 32h , 12088320s , 23610.0 MiB

and allow choosing by
xorriso -outdev /dev/sr0 -format by_index_3

or
xorriso -outdev /dev/sr0 -format by_size_23610m

Two questions here... First, in reading about xorriso it's really just for ISO formats correct? But in the case of simply formatting the media, we haven't affected the format choice, right? At this point I could still go with ISO9660 or UDF.

Second question/problem. When I try xorriso -outdev /dev/sr0 -list_formats I get the following:

# xorriso -outdev /dev/sr0 -list_formats

GNU xorriso 1.3.0 : RockRidge filesystem manipulator, libburnia project.

libburn : SORRY : Cannot open busy device '/dev/sr0' : Device or resource busy

libburn : FAILURE : Cannot access '/dev/sr0' as SG_IO CDROM drive

xorriso : FAILURE : Cannot aquire drive '/dev/sr0'

xorriso : aborting : -abort_on 'FAILURE' encountered 'FAILURE'

This is as root. As you can see I'm running the latest release. I'm also running 1.3.0 of libburn, libisoburn, libisofs... etc.

I am not aware of tools to produce UDF 2.50. mkisofs/genisoimage
create UDF 1.02, afaik.

No, but udftools will create an image up to 2.01, which is what I've been using to format my image files.

Thanks,

Richard