wrote:
Hello

Does anyone know how if there is a way to access a DVD that the drive
it was burnt with will not recognise?

The DVD was written with Nero 7 at 4x and UDF 1.2 was used because it
is one big file of 4.3GB. The drive is Lite-on DVDRW LDW-811S.
This only happens to some discs. I do not think it is brand dependant
becuase sometimes it happens and sometimes everything is ok using the
same medium. I am using Sony and Verbatim so it's not the worst I
should think. Nero verified the discs so that is why I thought
everything was ok and deleted the files after burning.

Does anyone know what is happening or if there is any way to force the
drive to read the medium it thinks is not there? I can use linux if
that is better. I have tried it in one other drive, but that drive
have issues of it's own. Still I think the disc really is ok if it
could only be recognised. Have been using Ashampoo and Discjuggler
since without this problem so I am guessing the problem is Nero.
Still would like my backups back though.

Since the file verifies, it was readable (though not necessarily
correct) when written. The easiest explanation is that the writing was
marginal and that when the drive cooled, the directory could not be
read. I gather that the disc is recognized by the drive with problems,
though it cannot be read correctly. The simplest conclusion is that the
drive is poorly written (has many errors) and isn't readable when the
drive is cool.

The simplest solution would be to install a DVD-ROM drive that reads the
disc, then try to get a good transfer of the file to the HD. Then you
can try writing it on a reliable blank and check that for errors. If the
current drive doesn't know that the disc is present, there's no way to
change its mind about that.

It would be interesting to know what Disc Info reports; does it think
the disc is present but blank or not present at all. Obviously, the disc
was recognized as present when it was written.

Mike
--

http://www.mrichter.com/