[ltp] R51 CD/DVD speed

[FeRD]

Whenever I hit hardware-performance issues like this, my first course of 
action (after fiddling with the appropriate software knobs, as you 
already have) is to try and eliminate the OS as the source of the problem.

I'd recommend downloading and burning the latest Ultimate Boot CD from 
http://www.ultimatebootcd.com/ and running some of its hardware tests to 
see if its results differ from what you're seeing in Linux. If you get 
the same results throughout, it's most likely a hardware/firmware/BIOS 
problem.

(Plus, the UBCD has come to the rescue for me on numerous occasions in 
all sorts of different ways. I consider it an indispensable tool to have 
at my disposal when working with Damn Hardware(tm).)

As a note of caution, some of the tools on the UBCD are dangerously 
powerful, and if misused can cause data loss, physical damage, loss of 
function, or incontinence. (And they could cause problems in your 
computer, too!)

-FeRD

P.S> _ALL_ hardware is Damn Hardware(tm).


Laurent Gilson wrote:
> Hello,
>
> Somehow the CD-reading speed is not what i expected.
>
> DVD are fine, but CD-R and CD-RW are read at 2.5-3 MB/s. It writes 
> CD-R faster then it can read.
>
> DMA is enabled. BIOS is set for high-speed. Other devices like HD work 
> with normal speed levels (linux 2.6.11, debian sid, ...). Playing with 
> hdparm does not change anything, even setting it to lower speeds does 
> not work.
>
> Any ideas ?
>
> thanks
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