What is the spike of C2 errors at the start of a disk?

I have used the disk quality scan on a selection of different disks on different burners at different speeds with different prograns, but almost all of them have a spike of C2 errors right at the start of the disk (~0 minutes), anywhere from 10 to a few hundred.

Is this due to how my burner reads the disks (Liteon SHW-16HS5), is it normal, is it of any concern and what should I do to avoid it?

I am sorry if I have missed another thread on this topic, I did a few searches and couldn’t find one.

I have used the disk quality scan on a selection of different disks on different burners at different speeds with different prograns, but almost all of them have a spike of C2 errors right at the start of the disk (~0 minutes), anywhere from 10 to a few hundred.

Is this due to how my burner reads the disks (Liteon SHW-16HS5), is it normal, is it of any concern and what should I do to avoid it?

I am sorry if I have missed another thread on this topic, I did a few searches and couldn’t find one.

Here are some scans.

(Another apology now… there was no edit button so I have double posted. :doh: )

[http://i53.photobucket.com/albums/g80/EliteEvil/1.gif](http://i53.photobucket.com/albums/g80/EliteEvil/1.gif)
 
[http://i53.photobucket.com/albums/g80/EliteEvil/2.gif](http://i53.photobucket.com/albums/g80/EliteEvil/2.gif)
 
[http://i53.photobucket.com/albums/g80/EliteEvil/3.gif](http://i53.photobucket.com/albums/g80/EliteEvil/3.gif)
 
[http://i53.photobucket.com/albums/g80/EliteEvil/4.gif](http://i53.photobucket.com/albums/g80/EliteEvil/4.gif) 

It may be the drive, if i recall liteon dvd writers are not very good cd scanners.

try changing the spin-up time from the default 10 seconds to 15 seconds (found under Options|Standard Tests)…then re-run the test on the same CD…see if that eliminates that initial C2 spike

I don’t think I’d be using a LiteOn DVD burner to scan CDRs, they’re not exactly accurate IMO.

Do you have a BenQ, Plextor DVD burner or maybe a LiteOn CDRW drive?

BTW, welcome to the forum :slight_smile:

They’re not accurate but to some extent consistent…

It appears it is just the way my drive reads it. I tried another pressed disk and this time it recorded a few C2 errors at the beggining (though it was only 4 so a lot fewer than with CDRs). Perhaps I was just lucky when I tried with a few pressed disks yesterday and none of them came up with any errors.

I have an NEC labelflash recorder that came up with no C2 errors on the same CDRs given above and will try on a Hitachi DVD RAM this evening.

Changing the spinup time appears to make little difference.

Thanks for all the replies though. :slight_smile:

The NEC is an accurate CD scanner so use the NEC instead :slight_smile:

I’d use the NEC as well (you don’t say which model it is, but my 4551A’s pretty good). I like to scan at 32x for CDRs on my NEC. :slight_smile: