Problem reading DVD

Since my original post I have been scanning disks with CDspeed and
TDK, Imation, Verbatim, Sony & Mitsubishi DVD +/- RWs have been 100 %
green, but TDK & Imation DVD+/-Rs have bad patches. I haven't used
CDspeed before, does it have a problem with DVD+/-Rs? All the damaged
photos I have were loaded were on DVD Rs. I thought DVD Rs were the
more reliable for back ups.

Mike

On Thu, 20 Jul 2006 01:14:33 GMT, MikeM <mmo45018 RemoveThis @bigpond.net.au>
wrote:

>I now have a new problem with my backup DVDs. The combo burner on my
>XP machine can't read an Imation DVD-R. I get the error message the
>disk is corrupt of an unknown format. The burner on my W2k machins
>reads it correctly, and the images display correctly. Both burners use
>+ & - DVDs. Also CDSpeed shows red for this disk on my XP machine. So
>far the problem has shown up with any other brands of disk, + or -.
>CDspeed also show parts of another Imation DVD-R disk as bad, but as
>far as I can tell there doesn't seem to be a problem on the burner on
>the W2k machine.
>
>Thanks
>Mike
 >> Stay informed about: Problem reading DVD 

MikeM <mmo45018 RemoveThis @bigpond.net.au> wrote in
news:8outb2107nnf3th41eq1tlndgmmq1r9mn3@4ax.com:

> Since my original post I have been scanning disks with CDspeed and
> TDK, Imation, Verbatim, Sony & Mitsubishi DVD +/- RWs have been 100 %
> green, but TDK & Imation DVD+/-Rs have bad patches. I haven't used
> CDspeed before, does it have a problem with DVD+/-Rs? All the damaged
> photos I have were loaded were on DVD Rs. I thought DVD Rs were the
> more reliable for back ups.
>
> Mike
>
> On Thu, 20 Jul 2006 01:14:33 GMT, MikeM <mmo45018 RemoveThis @bigpond.net.au>
> wrote:
>
>>I now have a new problem with my backup DVDs. The combo burner on my
>>XP machine can't read an Imation DVD-R. I get the error message the
>>disk is corrupt of an unknown format. The burner on my W2k machins
>>reads it correctly, and the images display correctly. Both burners use
>>+ & - DVDs. Also CDSpeed shows red for this disk on my XP machine. So
>>far the problem has shown up with any other brands of disk, + or -.
>>CDspeed also show parts of another Imation DVD-R disk as bad, but as
>>far as I can tell there doesn't seem to be a problem on the burner on
>>the W2k machine.
>>
>>Thanks
>>Mike
>

Mike,
I don't believe your problem is with the Imitation brand DVD's.
I've had similar problems with HP's.

The resolution for me was in becoming aware of how DVD-burners leave the
data. The reason that 16X DVD's work on commercial products are that the
DVD is "pressed" as oppsosed to burned:
Here' an explanation:
http://club.cdfreaks.com/showthread.php?s=3b214f5bb30122a21a611ec95195fae2
&t=94536


The fix is to burn the DVD at a speed of 8X or slower and it will read
fine on your combo reader.
 >> Stay informed about: Problem reading DVD 

MikeM wrote:

> I now have a new problem with my backup DVDs. The combo burner on my
> XP machine can't read an Imation DVD-R. I get the error message the
> disk is corrupt of an unknown format. The burner on my W2k machins
> reads it correctly, and the images display correctly. Both burners use
> + & - DVDs. Also CDSpeed shows red for this disk on my XP machine. So
> far the problem has shown up with any other brands of disk, + or -.
> CDspeed also show parts of another Imation DVD-R disk as bad, but as
> far as I can tell there doesn't seem to be a problem on the burner on
> the W2k machine.
>
> Thanks
> Mike
1) Burn your DVD at 4x and no faster.
2) Backup your images to gold CDs, such as Delkin. for longevity.
Morton
--
 >> Stay informed about: Problem reading DVD 

The worst affected disks were 4X and 8X. Why are DVD RWs of the same
speeds not affected?

Mike



On Thu, 20 Jul 2006 16:56:18 GMT, Don <lostinspace DeleteThis @123-universe.com>
wrote:

>MikeM <mmo45018 DeleteThis @bigpond.net.au> wrote in
>news:8outb2107nnf3th41eq1tlndgmmq1r9mn3@4ax.com:
>
>> Since my original post I have been scanning disks with CDspeed and
>> TDK, Imation, Verbatim, Sony & Mitsubishi DVD +/- RWs have been 100 %
>> green, but TDK & Imation DVD+/-Rs have bad patches. I haven't used
>> CDspeed before, does it have a problem with DVD+/-Rs? All the damaged
>> photos I have were loaded were on DVD Rs. I thought DVD Rs were the
>> more reliable for back ups.
>>
>> Mike
>>
>> On Thu, 20 Jul 2006 01:14:33 GMT, MikeM <mmo45018 DeleteThis @bigpond.net.au>
>> wrote:
>>
>>>I now have a new problem with my backup DVDs. The combo burner on my
>>>XP machine can't read an Imation DVD-R. I get the error message the
>>>disk is corrupt of an unknown format. The burner on my W2k machins
>>>reads it correctly, and the images display correctly. Both burners use
>>>+ & - DVDs. Also CDSpeed shows red for this disk on my XP machine. So
>>>far the problem has shown up with any other brands of disk, + or -.
>>>CDspeed also show parts of another Imation DVD-R disk as bad, but as
>>>far as I can tell there doesn't seem to be a problem on the burner on
>>>the W2k machine.
>>>
>>>Thanks
>>>Mike
>>
>
>Mike,
> I don't believe your problem is with the Imitation brand DVD's.
>I've had similar problems with HP's.
>
> The resolution for me was in becoming aware of how DVD-burners leave the
>data. The reason that 16X DVD's work on commercial products are that the
>DVD is "pressed" as oppsosed to burned:
>Here' an explanation:
>http://club.cdfreaks.com/showthread.php?s=3b214f5bb30122a21a611ec95195fae2
>&t=94536
>
>
> The fix is to burn the DVD at a speed of 8X or slower and it will read
>fine on your combo reader.
 >> Stay informed about: Problem reading DVD 

On Thu, 20 Jul 2006 21:43:41 -0400, Morton Linder <mort RemoveThis @cloud9.net>
wrote:

>1) Burn your DVD at 4x and no faster.
>2) Backup your images to gold CDs, such as Delkin. for longevity.

I would expand on this a bit, based on a good bit of experience with
optical media lifetimes:

- Burn your disks at 1/2 the rated burner or media speed, whichever is
lower.

- Always do a compare after the burn.

- Don't buy by brand name. Any given brand uses the cheapest supplier
who meets their spec, and the OEM can and will change from one spindle
to the next. This often means changes in the dye layer, reflective
layer, etc. This month's Verbatims may have been made by a different
OEM than last month's Verbatims.

- Buy Taiyo Yuden blanks, available from www.rima.com or
www.meritline.com, as well as others. They're an OEM, have a very
good reputation, and have been less likely to fail with age in my
experience. No disk is permanent, though.

- For troubleshooting, I always label my burned disks with the burn
date, burn speed and whether verified, burner model, and blank OEM.

When I try a new brand or spindle, I'll burn a few less important
disks at full speed with a post-burn compare. This is how I found out
the Riteks I accidentally bought had a 20% failure rate at 8x. They
were fine at 4x, but I didn't use them for anything important.

For long term archiving:

- Back up important data to more than one disk. I keep everything
important on a hard disk, back that up to another disk, and copy the
backups to DVD now and again. Avoid the risk that a single failure
will wipe out your data.

- Recopy archive disks every now and then to refresh them.

Remember that there is absolutely no data that says any given
writeable DVD will last any more than 5 years, and there are many
examples of them failing within 2.

FWIW, I used to use Kodak Gold CDRs, back in the day, as well as
Mitsui, and they all failed within 5 years. TY has been the most
reliable brand of CDR I've used.



--
Neil Maxwell - I don't speak for my employer
 >> Stay informed about: Problem reading DVD 

I have just scanned the "safe" disks of my UK/Europe trip photos that
I doubt I will ever get a chance to replace and found every DVD R disk
had bad sectors on it. Luckily the DVD RW disks that I was using as
temporary backup at the same time are all 100 % ok. From what I've
read on the group I seem to be unique in having RWs outlasting Rs.

Mike

On Thu, 20 Jul 2006 01:14:33 GMT, MikeM <mmo45018.TakeThisOut@bigpond.net.au>
wrote:

>I now have a new problem with my backup DVDs. The combo burner on my
>XP machine can't read an Imation DVD-R. I get the error message the
>disk is corrupt of an unknown format. The burner on my W2k machins
>reads it correctly, and the images display correctly. Both burners use
>+ & - DVDs. Also CDSpeed shows red for this disk on my XP machine. So
>far the problem has shown up with any other brands of disk, + or -.
>CDspeed also show parts of another Imation DVD-R disk as bad, but as
>far as I can tell there doesn't seem to be a problem on the burner on
>the W2k machine.
>
>Thanks
>Mike
 >> Stay informed about: Problem reading DVD