nero discspeed - erase vs format

  • Thread starter Thread starter Eric Gisin
  • Start date Start date
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Mike Richter, were you born with
"Scam Artist" emblazoned on your face?
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Mike Richter (Slimy Shit) crapped:

A "virgin" DVD+RW needs to be formatted prior to its use even for
mastering.
Click to expand...

There are two formattings: (udf) formatting and (plain) formatting.
DVD+RW needs to be (plain) formatted prior to its use. (udf) formatting
is built on top of (plain) formatting.

When Nero burns a mastering session on a 'virgin' DVD+RW:

"Start formatting disc before burning"
"Formatting disc was successful"
"Start write address at LBA 0"
DVD+RW does not support erasing. DVD+RW formatting does not get
destroyed.
Click to expand...

DVD+RW specification does not support erasing. However, this does not
prevent software/burner to implement some sort of "erase" functionality.

In any event, the (plain) formatting does not get erased.

The rationale behind DVD+RW not supporting erasing is that it is not
necessary (as overwriting does it). It only unnecessarily takes away one
cycle from the overwritability.
 
Eric said:
DiscSpeed is a free download from Nero, which includes an erase function.

The dialog has both Erase and Format functions. What is the difference?
SCSI MMC has ERASE.

One of my DVD+RW has a faint arc scratch, which shows up as hard errors
at 3GB.
Should erase pick this up? The laser has to switch between read
(tracking) and writing, and can detect some flaws during the former.
Click to expand...


I have read that Liteon produces a DVD drive that has Smart Erase - a
function that permanently and completely erases ALL data so that no one
would ever be able to extract data from the disk. It could be that Nero
takes advantage of capabilities like this when it can.
 
In comp.sys.ibm.pc.hardware.storage Jack Bauer said:
I have read that Liteon produces a DVD drive that has Smart Erase - a
function that permanently and completely erases ALL data so that no one
would ever be able to extract data from the disk.
Click to expand...

Better not believe that. The information on how well you can erase
optical media is sketchy. Sure, another plain optical drive will not
read erased data. But it may or may not be possible to read it with
special hardware.

Arno
 
Better not believe that. The information on how well you can erase
optical media is sketchy. Sure, another plain optical drive will not
read erased data. But it may or may not be possible to read it with
special hardware.

Arno
Click to expand...

You do not actually need special hardware to recover quick erased
disks. I have worked on a technique where DVD-RW (and CD-RW) can be
recovered using standard hardware. On a DVD+RW the data is normally
easily readable with a standard drive even when the DVD is apparently
empty.

The only secure erase will take time - probably at least 5 mins for a
DVD and probably longer. Anything less, don't trust it.

Michael
www.cnwrecovery.com
 
You do not actually need special hardware to recover quick erased
disks. I have worked on a technique where DVD-RW (and CD-RW) can be
recovered using standard hardware. On a DVD+RW the data is normally
easily readable with a standard drive even when the DVD is apparently
empty.

The only secure erase will take time - probably at least 5 mins for a
DVD and probably longer. Anything less, don't trust it.

Michael
www.cnwrecovery.com
Click to expand...

Careful, you'll have ****nert frothing at the mouth for sure.
 
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