Re: [Bug-xorriso] BDXL support

[Johan de Jong]

Hi,

On Fri, Jan 15, 2016 at 6:12 PM, Thomas Schmitt <address@hidden> wrote:

There is no urgent need to close it. Given the possible quality
problems between drive and medium, i would keep it as is, unless
its content is not worth keeping.

I suppose you are right. I'll keep it as it is.

 

Media error is in any case internal to the drive and its relation
to the medium. It may be influenced by choices made by the burn
program, which can cause the impression that a media error depends
on operating system or burn software.
But in best case this demonstrates that the relation between drive
and medium is only half broken.

Indeed. Also possible is that either or both the drive or the 5-disc box I received may be of a faulty series, but yes, as yet there is no way of knowing if this is as good as it gets with this combination.

 

Failure to reserve a track is supposed to be caused by a medium error
too, if the size would fit on the medium.

It would, since I tried to make a second copy of the same data that was successfully burned before ;-)

 

It may be that this BD medium is still blank and could work
with another attempt or in another drive.

I tried that, but the disc is rejected as being written to. I guess it is lost.

 

> I hope the succesrate will increase in the future otherwise this way of
> archiving important date becomes cumbersome and too expensive.

You are in new territory in two ways:
- multi-layer BD usage is still rare
- M-Disc is still an exotic dye technology.

Try multi-layer BD with organic dye.

I see your point. In fairness I should try both multi-layer BD with organic dye and single layer BD M-discs I suppose. Depending on the results I have to decide what is more important to me: capacity and thus compact storage or durability. Since the current consensus is that degradation or organic dyes results in corruption in a few years or sometimes months and I intend to archive for hopefully 10+ years (another technology may be on the corner then or optical drives hard to come by and the data needs to be migrated) I lean towards single layer M-discs.

 

My own experience with 25 GB BD-R is much better than 50%.
Single session hardly ever fails. Multi-session could work more
reliably.
25 GB BD-RE are quite reliable. The first burns always succeed
but i hade a few which died after only a dozen re-uses.

The prices for 50 GB and 100 GB BD media are not attractive.
Multi-layer BD-RE are not easy to get at all.

You certainly have a point there.

I'll report back when I have tested other media (organic dye BDXL, single layer M-disc)

Have a nice day :-)

Johan