Re: cdrecord starts slow and speeds up later

[Rob Bogus <rob23@tmr.com>]

Markus Plail wrote:

> Gil Disatnik <gil@disatnik.com> writes:
>  
>
> > I have a dvd/cdrw combo on my D600 laptop, when using cdrecord to burn
> > cds the burning process starts at x10 speed, after 168MB it goes up to
> > x16 speed and only after 502MB it finally reaches x24 speed.
> >    
>
> That's normal behaviour for certain cd writers. It's a question of the
> write strategy. This one is named Zone-CLV, which means that it writes a
> constant linear velocity in certain zones (0-168, 168-502, 502-end in
> your case). 
>
> There's also CAV which means constant angular, which means that the drive
> will rotate at the same speed throughout the whole burn process.
> And thus the writing speed will increase with every written MB.
>
>  
Outstanding simple explanation (I knew it but would have gone on about a 
page). I filed that to tosss back at the next person to ask. Much better 
than saying "laptop burners are crippled, live with it?" Well, you 
explain why, the burner is slow, but it still is.

Some (my ABIT for example) seem to run the same speed end to end, I 
would call that constant data rate, but I know there's a standard term. 
Yes, the drive sounds as if it changes speed constantly, it really seems 
to be doing that.

--
E. Robert Bogusta
 It seemed like a good idea at the time