mirror of
https://github.com/mpv-player/mpv
synced 2024-12-23 23:32:26 +00:00
52d8516c1d
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@522 b3059339-0415-0410-9bf9-f77b7e298cf2
46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
|
|
Tune up CDROM
|
|
~~~~~~~~~~~~~
|
|
|
|
Introduction
|
|
~~~~~~~~~~~~
|
|
>From Linux documentation:
|
|
|
|
Some CDROM drives are capable of changing their head-speed. There are several
|
|
reasons for changing the speed of a CDROM drive. Badly pressed CDROMs may
|
|
benefit from less-than-maximum head rate. Modern CDROM drives can obtain very
|
|
high head rates (up to 24-times is common). It has been reported that these
|
|
drives can make reading errors at these high speeds, reducing the speed can
|
|
prevent data loss in these circumstances. Finally, some of these drives can
|
|
make an annoyingly loud noise, which a lower speed may reduce.
|
|
|
|
Howto
|
|
~~~~~
|
|
The recommended way to do it is with a program called 'setcd' . It's kinda
|
|
old, but won't be too hard to find on the Net.
|
|
Use it with :
|
|
setcd -x <speed> <cdrom device>
|
|
|
|
Also you can try :
|
|
echo current_speed:4 >/proc/ide/<cdrom device>/settings
|
|
but you'll need root privileges. (It didn't work for me - Gabucino)
|
|
|
|
I use following command too :
|
|
echo file_readahead:2000000 >/proc/ide/<cdrom device>/settings
|
|
for 2MB prefetched reading from the file (it's useful for scratched CDROMs).
|
|
|
|
It's recommended that you tuneup your CDROM drive also with hdparm:
|
|
|
|
hdparm -d1 -a8 -u1 <cdrom device>
|
|
to enable using DMA access, readahead, and IRQ unmasking.
|
|
(if you don't understand these, *read the hdparm manpage*)
|
|
|
|
Final words
|
|
~~~~~~~~~~~
|
|
Please refer to "/proc/ide/<cdrom device>/settings" for fine-tuning your CDROM.
|
|
|
|
Nick Kurshev & Gabucino
|
|
<nickols_k@mail.ru>
|
|
|
|
|