What does this mean?

Arienrhode · 29-07-2004

Hi guys, i'm trying to figure out how good my burn(s) are. I ran CD Speed and here is what came up.

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It's a Unifino 4x DVD-R burned @ 4x with a 2500A using CopytoDVD. What does this mean? Thanks!

*mcbyte* · 29-07-2004

the green line means the linear velocity under the reading head
the yellow line means the dvd drive motor speed

so this means that when reading this disc, the motor speed was constant (same during the whole reading process), and because the dvd disc has 2 diameters (internal near the hole, and external) the linear speed varies (increase) when going from inside to outside...

this is called CAV = Constant Angular Velocity.

some media (writing RW discs) is CLV (Constant Linear Velocity): the green line is fixed on some value, and the yellow decreases.

*Jamos* · 29-07-2004

it means your disks transfer rate is good up to 8x. you still could have other issues with it though. try a surface scan for defects next.

Arienrhode · 29-07-2004

Here is the surface scan...

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*cd pirate* · 29-07-2004

Unreadable errors....that makes no sense...

If it reads without any blips how on earth does it have UNREADABLE errors?

Arienrhode · 29-07-2004

Quote:

Originally Posted by cd pirate

Unreadable errors....that makes no sense...

If it reads without any blips how on earth does it have UNREADABLE errors?

No idea myself. I have tested scrutinized this particular disk very carefully on my standalone DVD player. It player perfectly throughout the entire disk. I have burned almost 100 of these 4x -R Unifino disk with good results, at the price newegg is selling them I am very happy...but i'm no expert.

*cd pirate* · 29-07-2004

It must be a glitch in cdspeed. Unreadable errors arent just magically read perfectly in transfer rate tests and DVD players.

I wouldn't worry about them.

BTW, have you got another DVD drive? Or perhaps you can go to a friends house who has a different DVDrom or writer. Do a scan disc on theirs and see if those errors appear. My bet is they wont.

*Jamos* · 29-07-2004

Quote:

Originally Posted by Arienrhode

Here is the surface scan...

was this from the same drive?

Arienrhode · 29-07-2004

I have another (DVDSKOREA, what a brand....), but when I try to run a surface scan the program crashes before the new window even comes up.

Arienrhode · 29-07-2004

Quote:

Originally Posted by Jamos

was this from the same drive?

Roger that. Same drive, same disk, same hour too.

*cd pirate* · 29-07-2004

No I mean do you have another DVD drive?

*Jamos* · 29-07-2004

are you using cdspeedv3.1? at http://www.cdspeed2000.com/

Arienrhode · 29-07-2004

Quote:

No I mean do you have another DVD drive?

Yeah, a DVDSKOREA running on the primary channel. It's a first generation 16x drive that I got @ Best Buy

Quote:

are you using cdspeedv3.1? at http://www.cdspeed2000.com/

Yep. Downloaded it today.

*cd pirate* · 29-07-2004

Yup ok. Try it on both drives

And post the results

*Kenshin* · 29-07-2004

Quote:

Originally Posted by Arienrhode

Yeah, a DVDSKOREA running on the primary channel. It's a first generation 16x drive that I got @ Best Buy

Yep. Downloaded it today.

That's probably OEM to Sony.

Arienrhode · 29-07-2004

Ok folks, here we go. I am using a different disk this time, it is a backup of Super Speedway: IMAX made using Nero 6 @ 4x

The first DVD drive is a DVSKOREA DSR1600H:

DVD read @ 8x: I have no idea why it maxed out, I am possitive I had it set to 8x. It sped up to max and crashed eventualy.

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Surface test with DVSKOREA: Program crashes as soon as I select scandisk from the menu.

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And here is the 2500A (using Herrie's latest firmware)...

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Here is the surface scan on the 2500A:...

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*Jamos* · 29-07-2004

you disk is fine..most will fail at 16x reads anyways. im not sure why you get a error trying to do a surface scan sounds like cdspeed doesnt like the drives firmware..whens the last time you updated that diskoreh drives firmware?

*cd pirate* · 30-07-2004

Wow does anyone know how he got his drive to read a burnt DVD at 16x?? That's crazy lol

Arienrhode · 30-07-2004

Quote:

Originally Posted by cd pirate

Wow does anyone know how he got his drive to read a burnt DVD at 16x?? That's crazy lol

I would like to know myself. It seems to go fairly well until 14x, by then my drive sounds like a freaking rocket taking off!

*Jamos* · 30-07-2004

sounds like you have some issues with the dvd rom drive id be careful sounds like the speed limiter is broken ive seen them shatter disks when this happens.

Arienrhode · 30-07-2004

Thanks for the advice, I think i'll be getting a new DVD-ROM.

But the real question is, does this media look ok?

*Jamos* · 30-07-2004

from what ive seen yes it looks like a good burn. i think you can trust your nec too for scans..

29-07-2004	#1
Arienrhode New on Forum Join Date: Jul 2004 Posts: 18	What does this mean? Hi guys, i'm trying to figure out how good my burn(s) are. I ran CD Speed and here is what came up. Embedded Images View/download images and remove advertisements by registering now! (it's easy, free and takes less than a minute) You must be registered in order view images in this forum. It's a Unifino 4x DVD-R burned @ 4x with a 2500A using CopytoDVD. What does this mean? Thanks!

29-07-2004	#2
mcbyte CDFreaks Resident Join Date: Jun 2004 Posts: 576	Re: What does this mean? the green line means the linear velocity under the reading head the yellow line means the dvd drive motor speed so this means that when reading this disc, the motor speed was constant (same during the whole reading process), and because the dvd disc has 2 diameters (internal near the hole, and external) the linear speed varies (increase) when going from inside to outside... this is called CAV = Constant Angular Velocity. some media (writing RW discs) is CLV (Constant Linear Velocity): the green line is fixed on some value, and the yellow decreases.

29-07-2004	#3
Jamos CDFreaks Resident Join Date: Oct 2003 Location: on your computer Posts: 3,621	Re: What does this mean? it means your disks transfer rate is good up to 8x. you still could have other issues with it though. try a surface scan for defects next. __________________ Current DVD Hardware: 8x: Liteon SOHW-832, Benq DW822, NEC ND-2500 12x: LG GSA-4120, Plextor PX-712A 16x: Pioneer DVR-108, Benq DW-1620A, Benq DW1655, NEC ND3500A, Plextor PX-716A, LG LG4163, Liteon SOHW-1693, NEC 4550, Pioneer DVR-111D 18x: Plextor 760A

29-07-2004	#4
Arienrhode New on Forum Join Date: Jul 2004 Posts: 18	Re: What does this mean? Here is the surface scan... Embedded Images View/download images and remove advertisements by registering now! (it's easy, free and takes less than a minute) You must be registered in order view images in this forum.

29-07-2004	#5
cd pirate MyCE Resident Join Date: Jul 2002 Location: Australia Posts: 3,294	Re: What does this mean? Unreadable errors....that makes no sense... If it reads without any blips how on earth does it have UNREADABLE errors?

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29-07-2004	#7
cd pirate MyCE Resident Join Date: Jul 2002 Location: Australia Posts: 3,294	Re: What does this mean? It must be a glitch in cdspeed. Unreadable errors arent just magically read perfectly in transfer rate tests and DVD players. I wouldn't worry about them. BTW, have you got another DVD drive? Or perhaps you can go to a friends house who has a different DVDrom or writer. Do a scan disc on theirs and see if those errors appear. My bet is they wont.

29-07-2004	#9
Arienrhode New on Forum Join Date: Jul 2004 Posts: 18	Re: What does this mean? I have another (DVDSKOREA, what a brand....), but when I try to run a surface scan the program crashes before the new window even comes up.

29-07-2004	#11
cd pirate MyCE Resident Join Date: Jul 2002 Location: Australia Posts: 3,294	Re: What does this mean? No I mean do you have another DVD drive?

29-07-2004	#12
Jamos CDFreaks Resident Join Date: Oct 2003 Location: on your computer Posts: 3,621	Re: What does this mean? are you using cdspeedv3.1? at http://www.cdspeed2000.com/ __________________ Current DVD Hardware: 8x: Liteon SOHW-832, Benq DW822, NEC ND-2500 12x: LG GSA-4120, Plextor PX-712A 16x: Pioneer DVR-108, Benq DW-1620A, Benq DW1655, NEC ND3500A, Plextor PX-716A, LG LG4163, Liteon SOHW-1693, NEC 4550, Pioneer DVR-111D 18x: Plextor 760A

29-07-2004	#14
cd pirate MyCE Resident Join Date: Jul 2002 Location: Australia Posts: 3,294	Re: What does this mean? Yup ok. Try it on both drives And post the results

29-07-2004	#16
Arienrhode New on Forum Join Date: Jul 2004 Posts: 18	Re: What does this mean? Ok folks, here we go. I am using a different disk this time, it is a backup of Super Speedway: IMAX made using Nero 6 @ 4x The first DVD drive is a DVSKOREA DSR1600H: DVD read @ 8x: I have no idea why it maxed out, I am possitive I had it set to 8x. It sped up to max and crashed eventualy. Embedded Images View/download images and remove advertisements by registering now! (it's easy, free and takes less than a minute) You must be registered in order view images in this forum. Surface test with DVSKOREA: Program crashes as soon as I select scandisk from the menu. Embedded Images View/download images and remove advertisements by registering now! (it's easy, free and takes less than a minute) You must be registered in order view images in this forum. And here is the 2500A (using Herrie's latest firmware)... Embedded Images View/download images and remove advertisements by registering now! (it's easy, free and takes less than a minute) You must be registered in order view images in this forum. Here is the surface scan on the 2500A:... Embedded Images View/download images and remove advertisements by registering now! (it's easy, free and takes less than a minute) You must be registered in order view images in this forum.

29-07-2004	#17
Jamos CDFreaks Resident Join Date: Oct 2003 Location: on your computer Posts: 3,621	Re: What does this mean? you disk is fine..most will fail at 16x reads anyways. im not sure why you get a error trying to do a surface scan sounds like cdspeed doesnt like the drives firmware..whens the last time you updated that diskoreh drives firmware? __________________ Current DVD Hardware: 8x: Liteon SOHW-832, Benq DW822, NEC ND-2500 12x: LG GSA-4120, Plextor PX-712A 16x: Pioneer DVR-108, Benq DW-1620A, Benq DW1655, NEC ND3500A, Plextor PX-716A, LG LG4163, Liteon SOHW-1693, NEC 4550, Pioneer DVR-111D 18x: Plextor 760A

30-07-2004	#18
cd pirate MyCE Resident Join Date: Jul 2002 Location: Australia Posts: 3,294	Re: What does this mean? Wow does anyone know how he got his drive to read a burnt DVD at 16x?? That's crazy lol

30-07-2004	#20
Jamos CDFreaks Resident Join Date: Oct 2003 Location: on your computer Posts: 3,621	Re: What does this mean? sounds like you have some issues with the dvd rom drive id be careful sounds like the speed limiter is broken ive seen them shatter disks when this happens. __________________ Current DVD Hardware: 8x: Liteon SOHW-832, Benq DW822, NEC ND-2500 12x: LG GSA-4120, Plextor PX-712A 16x: Pioneer DVR-108, Benq DW-1620A, Benq DW1655, NEC ND3500A, Plextor PX-716A, LG LG4163, Liteon SOHW-1693, NEC 4550, Pioneer DVR-111D 18x: Plextor 760A

30-07-2004	#21
Arienrhode New on Forum Join Date: Jul 2004 Posts: 18	Re: What does this mean? Thanks for the advice, I think i'll be getting a new DVD-ROM. But the real question is, does this media look ok?

30-07-2004	#22
Jamos CDFreaks Resident Join Date: Oct 2003 Location: on your computer Posts: 3,621	Re: What does this mean? from what ive seen yes it looks like a good burn. i think you can trust your nec too for scans.. __________________ Current DVD Hardware: 8x: Liteon SOHW-832, Benq DW822, NEC ND-2500 12x: LG GSA-4120, Plextor PX-712A 16x: Pioneer DVR-108, Benq DW-1620A, Benq DW1655, NEC ND3500A, Plextor PX-716A, LG LG4163, Liteon SOHW-1693, NEC 4550, Pioneer DVR-111D 18x: Plextor 760A