Slow DVD Writing Speed (Toshiba SD-R5372)

vbimport

#1

I have problem with my new DVD burner by TOSHIBA / SAMSUNG SD-R5372.
It is an external DVD burner, however I bought in a metal gear box with USB 2.0 interface for my Toshiba Satellite laptop.

The problem is that it cannot burn a 4x rated DVD+RW at more than 2.4x. Even though with new firmware the burner should handle speeds up to 8x.
At the same time DVD+R’s, CD-RW’s and CD-R can be burned at high speeds.
One of the 4x rated DVD+RW’s I tried is Maxell (MID is Ritek 004 (48)).

Nero’s cannot recognize it as 4x rated DVD+RW. For example, Nero’s CD/DVD Speed says


MID: RITEK 004 (048)
Write Speeds: 2.4x
Layers: 1
Write Strategies: 4x
Disc Status: Closed

Running analysis in “Create Disc” of the Nero’s CD/DVD Speed give average speed 2.5x.

Here is the output from another tool (DVD Identifier):

Unique Disc Identifier : [DVD+RW:RITEK-004-048]

Disc & Book Type : [DVD+RW] - [DVD+RW]
Manufacturer Name : [Ritek Corp.]
Manufacturer ID : [RITEK]
Media Type ID : [004]
Product Revision : [048]
Blank Disc Capacity : [2,295,104 Sectors = 4.70 GB (4.38 GiB)]
Recording Speeds : [1x-2.4x , 1.6x-4x]

** INFO : Drive = TOSHIBA CD/DVDW SD-R5372 - [FW TU55] - [USB]
** INFO : Write Capabilities = DVD+R DVD+R-DL DVD+RW
** INFO : Write Capabilities = DVD-R DVD-RW
** INFO : Disc = [DVD+RW:RITEK-004-048]
** INFO : Reference Speed : 1x DVD = 1385 kBps
** INFO : An Writeable Disc Is Recommended For Accurate Results
** INFO : Write Speeds (Supported By This Drive On This Disc) Listed Below

** INFO : GET PERFORMANCE Write Speed Descriptor(s)
Descriptor #1 = 3324 kBps ( 2.40x) - [CLV/Non-Pure CAV]

** INFO : MODE SENSE Write Speed Descriptor(s) [Legacy Command]
** WARNING : MODE SENSE Is Obsolete And Not Always Properly Supported
Descriptor #1 = 8467 kBps ( 6.00x) - [CLV/Non-Pure CAV]
Descriptor #2 = 7056 kBps ( 5.09x) - [CLV/Non-Pure CAV]
Descriptor #3 = 6703 kBps ( 4.84x) - [CLV/Non-Pure CAV]
Descriptor #4 = 5645 kBps ( 4.00x) - [CLV/Non-Pure CAV]
Descriptor #5 = 4234 kBps ( 3.06x) - [CLV/Non-Pure CAV]
Descriptor #6 = 2822 kBps ( 2.04x) - [CLV/Non-Pure CAV]
Descriptor #7 = 1411 kBps ( 1.00x) - [CLV/Non-Pure CAV]
Descriptor #8 = 706 kBps ( 0.51x) - [CLV/Non-Pure CAV]

On one forum
http://www.cdrlabs.com/phpBB/viewtopic.php?t=19870&highlight=change+write+speed+dvd
I found that Nvidia drivers may cause the problem by impeding with IDE driver. However, I don’t know if it is a valid point because I am using USB 2.0 interface

Using MediaCodeSpeedEdit.exe it looks like the latest firmware update TU55 it should be able to write Ritek 004 at 4x

Some sys info: I am using Windows XP (home), DMA is enabled for the hard drive

Please help …. :sad: