Are my discs good?

vbimport

#1

I just bought a bunch of Imation DVD-R’s, and i am wondering if they are good or if they suck. here is the DVD identifyer thingey


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Unique Disc Identifier : [DVD-R:CMC MAG. AM3]
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Disc & Book Type :       [DVD-R] - [DVD-R]
Manufacturer Name :      [CMC Magnetics Corp.]
Manufacturer ID :        [CMC MAG. AM3]
Blank Disc Capacity :    [2,298,496 Sectors = 4.71 GB (4.38 GiB)]
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** INFO : Drive = _NEC DVD+-RW ND-2510A - [FW 205D] - [ATAPI]
** INFO : Write Capabilities = DVD+R DVD+R-DL DVD+RW
** INFO : Write Capabilities = DVD-R DVD-RW
** INFO : Disc = [DVD-R:CMC MAG. AM3]
** 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 = 10816 kBps ( 7.81x) - [CLV/Non-Pure CAV]
Descriptor #2 =  8112 kBps ( 6.00x) - [CLV/Non-Pure CAV]
Descriptor #3 =  5408 kBps ( 4.00x) - [CLV/Non-Pure CAV]
Descriptor #4 =  2704 kBps ( 2.00x) - [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** WARNING : MODE SENSE Is Obsolete And Not Always Properly Supported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 =  5645 kBps ( 4.00x) - [CLV/Non-Pure CAV]
Descriptor #2 =  4234 kBps ( 3.06x) - [CLV/Non-Pure CAV]
Descriptor #3 =  3528 kBps ( 2.55x) - [CLV/Non-Pure CAV]
Descriptor #4 =  2822 kBps ( 2.00x) - [CLV/Non-Pure CAV]
Descriptor #5 =  1411 kBps ( 1.00x) - [CLV/Non-Pure CAV]
Descriptor #6 =   706 kBps ( 0.51x) - [CLV/Non-Pure CAV]
----------------------------------------------------------------------------
** INFO : Hex Dump Of 'Media Code'-Block Listed Below
** INFO : 4-Byte Header Preceding 'Media Code'-Block Discarded
** INFO : Format 0Eh - Pre-Recorded Information In Lead-In
0000 : 01 40 c1 fd 9e d8 52 00  02 84 0d 12 98 99 90 00   .@....R.........
0010 : 03 43 4d 43 20 4d 41 00  04 47 2e 20 41 4d 33 00   .CMC MA..G. AM3.
0020 : 05 88 80 00 00 00 02 00  06 09 0d 14 98 88 90 00   ................
0030 : 07 88 80 00 00 00 00 00  08 07 17 0a 0e 09 04 00   ................
0040 : 09 95 07 0d 0b 88 88 00  0a 80 00 00 00 00 10 00   ................
0050 : 0b 06 17 15 b8 99 85 00  0c b8 9a 32 03 20 32 00   ...........2. 2.
0060 : 0d 00 00 d0 00 00 00 00  0e 09 1f 39 2f 25 1c 00   ...........9/%..
0070 : 0f 50 19 29 19 89 b5 00  10 88 84 00 04 00 04 00   .P.)............
0080 : 11 00 00 00 00 00 00 00  12 09 2b 37 2d 29 1b 00   ..........+7-)..
0090 : 13 50 1d 2d 1f a6 b5 00  14 88 80 00 00 00 00 00   .P.-............
00a0 : 15 00 00 00 00 00 00 00  16 0b 45 3d 3b 1f 25 00   ..........E=;.%.
00b0 : 17 30 25 31 0d 8a b5 00  18 88 80 00 00 00 00 00   .0%1............
00c0 : 19 00 00 00 00 00 00 00  1a 0c 51 51 51 45 2d 00   ..........QQQE-.
00d0 : 1b 90 23 2d 19 79 b5 00  1c 88 80 00 00 00 00 00   ..#-.y..........
00e0 : 1d 00 00 00 00 00 00 00                            ........        
 
** INFO : Hex Dump Of 'Control Data Zone'-Block Listed Below
** INFO : 4-Byte Header Preceding 'CDZ'-Block Discarded
** INFO : Format 10h - Physical Format Information Of Control Data Zone
0000 : 25 0f 02 00 00 03 00 00  00 26 12 7f 00 00 00 00   %........&......
----------------------------------------------------------------------------
[ DVD Identifier V4.3.0 - http://DVD.Identifier.CDfreaks.com ]
----------------------------------------------------------------------------


Thanx!


#2

Depending on the drive & firmware, they can give good results.


#3

I until recently, had an _NEC DVD_RW ND-2500A But I couldn’t get it to burn DVD-R’s so I asked and upgraded my firmware to an _NEC DVD±RW ND-2510A with some special firmware. I think it was 205D.
Thanx for the quick reply!


#4

I agree that it will depend on the drive/firmware. You are using an 8x drive (NEC 2510), ideally you should be using 8x or slower rated media, but you should be ok using these discs since you have the latest firmware (205d) on your drive. The problems that you can encounter when using 16x media on a slower burner is A) lack of firmware support is a definite possibility, although an 8x drive with the most current firmware should be ok, and NEC handles CMC well in general. B) Generally speaking, media tends to burn best at its rated speed, although one exception is 16x media, which typically burns best at 12x or even 8x in some cases.


#5

okay. Well, I think everything will be fine. I am using them to burn a play preformed at a juinor high, so i dont think it matters much. I am selling them… but oh well, if they mess up, I’ll have the person I sold it to come back and get another one.


#6

Scan them for quality with Nero cd dvd speed after it has been burned…


#7

how do i tell if it is good or not?


#8

I don’t think it’s possible to perform PIE/PIF scanning with the 2500/2510 :disagree: . As far as I know, the first NEC drive with this ability was the 3500? (or the 3520? I don’t remember exactly…)

Anyway, most NEC drives are not reliable PIE/PIF scanners so for a beginner in scanning I don’t think it’s a good idea to scan in a NEC.

I’d rather advise you, mew1033, to perform a “transfer rate test” with CDSpeed. (“Benchmark” tab, “Run test” menu, select “transfer rate”). If the reading curve is smooth with no slowdowns, you discs are burnt OK. With this method you won’t be able to tell if the burning quality is only acceptable, good or excellent, but at least you’ll know that there is no significant problem. :slight_smile:

Important: don’t perform background tasks during a transfer rate test, this can lead to slowdowns not related to the disc quality at all. As an alternative, if you download the latest CDSpeed (4.51), you can set the program to “real-time” priority in the options, then backgound activity doesn’t matter much.


#9

lol, i was just postingto say that the PIE/PIF scan wasn’t supported by my burner.
I alredy oppened the CDSpeed utility, but i just pushed start. I think it did a transfer rate test, but i’m doing it the way you said just in case. When i did it before, the yellow line was straight the whole time, and the green line curved up almost perfectly. (there were little dips in it now and then, but only like 4 or 5 pixles each)


#10

That’s OK :iagree: - the very small dips in the green curve like those you describe can be totally dismissed if the yellow line is still straight.

Could you post the result? I’m curious to see the actual reading speed. See this:http://club.cdfreaks.com/showpost.php?p=788654&postcount=1


#11

Is this what you’re looking for? If not, ill run the tool again as soon as nero is done burning my next (like 25th) copy of this disc. :bigsmile:



#12

Yes, thanks. I was curious to see if the 2500 was a 8X, 12X or 16X reader. Obviously it’s a 8X reader…


#13

is that a good thing or a bad thing?


#14

Funny question! Drives got faster and faster, now all recent drives are 16X readers. It’s more convenient for data handling of course. But there is nothing specifically “wrong” with 8X readers. You just spend more time waiting… :wink:

Also the transfer rate test with 8X readers is less discriminative, as there is less stress during the reading process than in 16X readers. And this is a somewhat bad thing, as some issues will only be revealed at full-speed 16X reading. Though I wouldn’t worry too much if I were you.


#15

ya, i thought it was a dumb question.

You just spend more time waiting…

I burn the DVD’s I made in 9 minutes exactly every time. I thought that that was a fast time. But oh well. I wonder what speeds will be out in January when i build a new computer… :wink:


#16

I was referring to the reading speed, not the burning speed!


#17

Ya, I figured. I just wanted to see what you said when I made sucha huge mistake. Now, I am going to bed I have been doing homework/burning DVD’s since 8 P.M. (it’s now 5:30 A.M.)
Don’t do that.
It hurts.
Go to bed!
Okay…

If anyone else can explain that, please do cause i sure as heck can’t…


#18

Yes, I rem now.
There was this one which never were released… :bigsmile:


#19

No, you’re thinking of the 2.R8 research firmware for the NEC ND-3500 (not the 2500/2510). This firmware was capable of PIE/PIF scanning, but was never released to the public.