Re: Errors with 8x media, works in other OS

[Bill Davidsen <davidsen@tmr.com>]

curran@rpi.edu wrote:

> On Sun, 27 Feb 2005, Bill Davidsen wrote:
>
> [snip]
>  
>
> > That's easy, speed=4 doesn't mean 4x, it means the 4th supported speed
> > in the list of capabilities. So:
> >    
> ...
>
> Yes, I had found that out from other posts on the list.  My
> "cryptic" aside was just a commentary on how counter-intuitive
> it is.
>
> Also, the numbers just don't match up with the media I have.  I 
> had to use trial and error.  The media I burned has:
>
> Write Speed #0:        8.0x1385=11080KB/s
> Write Speed #1:        6.0x1385=8310KB/s
> Write Speed #2:        4.0x1385=5540KB/s
>
> Or in the speed descriptor section:
>
> Speed Descriptor#0:    00/1466335 R@6.3x1385=8672KB/s W@8.0x1385=11080KB/s
> Speed Descriptor#1:    00/1466335 R@6.3x1385=8672KB/s W@6.0x1385=8310KB/s
> Speed Descriptor#2:    00/1466335 R@6.3x1385=8672KB/s W@4.0x1385=5540KB/s
>
> In no case should speed=1 match to 4x, or speed=2 match to 6x, unless we 
> are counting in speed-order, not listing or number order.  No speed setting 
> (or setting speed=3) would then give 8x?  The manual page is not really
> helpful on this issue at all.
>  
The man page is not nearly as good as the software... I believe that the 
speed selection is advisory unless you use an option like force-speed. I 
was looking for some help in the code for "use-the-force-luke" options, 
and didn't find any. However, I did find that the dvd_compat variable 
gets set many places and doesn't seem to get used anywhere, which may 
explain something I'm bother with.

--

bill davidsen <davidsen@tmr.com>
 CTO TMR Associates, Inc
 Doing interesting things with small computers since 1979