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How Is This POSSIBLE!? Burned to 4x CD-RW successfully at 20x!

G

GL

Diamond Member
I've got an Aopen CRW 2040a and was using Maxell CD-RWs rated for 4x. I also happened to have some 20x media around and I needed to make 4 copies of a data CD with Nero. So the first disc I used was a 20x CD-R, and it burned fine. I then used the other Maxells and it proceeded to burn successfully to them at 20x! How is this possible? The CDs are absolutely fine too, I just read them in a different computer.
 
Nope, no mention of Japan. It says Maxell of America and lists a U.S. and Canada address. But the real mystery is my burner can only do 10x CD-RW writing!
 


<< Nope, no mention of Japan. It says Maxell of America and lists a U.S. and Canada address. But the real mystery is my burner can only do 10x CD-RW writing! >>


well, you just burned your CD-RW as a CD-R. You are not going to be able to format it again...
 


<<

<< Nope, no mention of Japan. It says Maxell of America and lists a U.S. and Canada address. But the real mystery is my burner can only do 10x CD-RW writing! >>


well, you just burned your CD-RW as a CD-R. You are not going to be able to format it again... >>



Nope, I just erased it and wrote to it again! This is very weird.
 


<<

<<

<< Nope, no mention of Japan. It says Maxell of America and lists a U.S. and Canada address. But the real mystery is my burner can only do 10x CD-RW writing! >>


well, you just burned your CD-RW as a CD-R. You are not going to be able to format it again... >>



Nope, I just erased it and wrote to it again! This is very weird. >>


are you serious? That is really really weird...
 
hmmm... maybe you can regular burn it and still erase it? if so you're an 3l33t h4X0r now.
 
OK, well maybe others can try to reproduce this behaviour. This is what I did:

First off, I'm using Nero 5.5.7.8 and WinXP with the latest updates, as well as an Aopen CRW 2040a with latest firmware.
Also, I'm using the Maxell CD-RW (Not CD-RW HighSpeed).

Try to copy a CD. Tell Nero to make 2 copies (don't do it manually, you must tell Nero to make two copies). The first time, use a CD-R with a high-rated speed (i.e. 20x). When Nero goes to make the second copy, put in the CD-RW and watch it burn at the same speed as the first copy!
 


<<

<< well, you just burned your CD-RW as a CD-R. You are not going to be able to format it again... >>


Why not?😕 >>


well, CD-RWs can be burned as CD-Rs(Im almost sure, someone correct me if im wrong) so i just assumed that he has burned his CD-RW as a CD-R, which would explain ALOT, but the fact that he erased it really confuses me more
 


<<

<<

<< well, you just burned your CD-RW as a CD-R. You are not going to be able to format it again... >>


Why not?😕 >>


well, CD-RWs can be burned as CD-Rs(Im almost sure, someone correct me if im wrong) so i just assumed that he has burned his CD-RW as a CD-R, which would explain ALOT, but the fact that he erased it really confuses me more >>




You can't burn CD-RW as a CD-R. They are two complete different chemistries and recorded using different strategies. It is the responsibility of the drive to determine the type of the media and not allow speeds higher or lower than marked on disc. Whether it reports it or not to the computer is a different story.

Nero just displays whatever drive reports back. If you burn at 24x setting, it will say "burn process successful at 24x" even if the speed didn't go beyond 16x at all due to media quality.

 
one of my good friends is an engineer for philips in their optics division. hes told me in the past that 1x CDs are the exact same things as <insertnumber>x CDs, they're just repackaged. he blames the marketing department for that. he says any good two layer (most are according to him) CDs will burn easily up to 40x. but i'm just the messenger so take that as you will, although i will say, hes never been wrong in the past.
 
How long did it take to burn this cdrw?? If it took the normal amount of time for a cdrw, then it just misreported the write speed, BUT if it did copy the cd in like a few mins at 20x, then it would have copied at that stated speed.
 
The CD being copied was a multisession one I believe and it had just over 150MB on it. It took just over 3 minutes for each copy to burn. Although I'm not exactly sure of the copy time because I remember I accidentally had the simulation box checked as well, so it would simulate a write, then actually write. I really should have saved the Nero message log to a file. I'll see if I can reproduce this behaviour but I no longer have those CDs and I only have CD-RW Highspeeds (10x) not the 4x ones.
 
your drive has burn-proof so it prob slowed itself down. If you really burned at 20x it would not have taken 3 minutes for 150MB. A 20x drive should be able to burn a 650MB CD in 3 minutes, even if you simulated first, that would mean 6 minutes altogether for a whole CD. you burned 150MB, or close to 1/4 of the CD. it should have taken 1.5 minutes for you to burn that with testing, it took you twice that, so its sounds like you actually burned at 10x due to burn proof kicking in.
 


<< your drive has burn-proof so it prob slowed itself down. If you really burned at 20x it would not have taken 3 minutes for 150MB. A 20x drive should be able to burn a 650MB CD in 3 minutes, even if you simulated first, that would mean 6 minutes altogether for a whole CD. you burned 150MB, or close to 1/4 of the CD. it should have taken 1.5 minutes for you to burn that with testing, it took you twice that, so its sounds like you actually burned at 10x due to burn proof kicking in. >>



The interesting thing is I got no burn-proof messages from Nero. Usually after burn-proof kicks in, it will notify me. And, I agree that 3 minutes with testing still sounds a bit on the lengthy side. However, this wasn't a CD-RW Highspeed that should have burned at 10x. Granted, burning a CD-RW at the maximum speed (10x) that my burner can work at for CD-RWs is a much more plausible explanation of what happened. I'm trying to hunt down some old CD-RWs that I have from my previous burner and I'll do an official test sometime by the end of this weekend. Even if I can get 10x out of normal CD-RWs, I think that'd be something useful🙂
 
there is not much difference between a 4x CDRW and 10x CDRW, they are still the same tech, the 10X cd is just guaranteed to work at that speed. It's just like CPUs or video cards, you may be able to run them faster, but there is no guarantee they will work.
 


<< there is not much difference between a 4x CDRW and 10x CDRW, they are still the same tech, the 10X cd is just guaranteed to work at that speed. It's just like CPUs or video cards, you may be able to run them faster, but there is no guarantee they will work. >>



Are you sure about that? I know this is pretty much true with regards to CD-Rs, but I can't use CD-RW Highspeeds on my old CD-RW burner, although I can use standard CD-RWs in a burner capable of writing at 10x. I'm not doubting you but this is another question I was wondering - why can't I use the CD-RW Highspeeds on the old burner?
 
about CD-RW vs. CD-R..... you can burn a CD-RW using a CD-R style filesystem, which makes it act like a CD-R, until you erase it. you can burn whatever you want onto a CD-RW, and erase it later.
 
I would say that maybe the burn-proof allows you a little margin for error in writing to the CD. That and maybe just because it is a little newer drive. Other than that, no idea reallly.
 


<<

<< there is not much difference between a 4x CDRW and 10x CDRW, they are still the same tech, the 10X cd is just guaranteed to work at that speed. It's just like CPUs or video cards, you may be able to run them faster, but there is no guarantee they will work. >>



Are you sure about that? I know this is pretty much true with regards to CD-Rs, but I can't use CD-RW Highspeeds on my old CD-RW burner, although I can use standard CD-RWs in a burner capable of writing at 10x. I'm not doubting you but this is another question I was wondering - why can't I use the CD-RW Highspeeds on the old burner? >>




He is wrong.

There is not much difference in CD-R's regardless of speed, but older 2-4x and newer 4-10x are in fact different. Even though it overlaps at 4x, the older recorders can't use newer CD, because it uses a different alloy that requires different recording strategy.
 
CTho9305: The reason he thinks otherwise is because Adaptec has forced him into thinking that their packet-written CD-RWs are the only way to do it. CD-RWs will burn EXACTLY like CD-Rs and will look like REAL non-recordable CDs when finished. Adaptec will not let you erase them because they are not in Adaptec DirecCD format. CD-RWs would be useless for anything but being a large floppy otherwise. Use a real burning program to really erase them. In fact, format your drive and reinstall Windows to get rid of every trace of Adaptec's crap. They interfere with the ASPI operation of your drive, usually introducing problems & limiting it's abilities plus there is no real method for getting rid of them. NEVER install Adaptec.
 
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