Hello, cd-dvd.xml seems to be outdated in some places. The following patch is an attempt to fix this a bit.
1) hdparm -a8 is too low value especially for DVD drives. I propose -a256 instead (both mine DVD drives use it). There is no harm if value will exceed range supported by the drive: hdparm will just use the highest possible value. 2) Current documentation mentions that there is no general way to set speed of SCSI drive, but there is: sdparm as of version 1.03 supports --command=speed=[speed in kB/s]: http://sg.danny.cz/sg/sdparm.html#mozTocId592219 Comments are welcome. -- Best regards, Andrew
Index: DOCS/xml/en/cd-dvd.xml =================================================================== --- DOCS/xml/en/cd-dvd.xml (revision 28651) +++ DOCS/xml/en/cd-dvd.xml (working copy) @@ -53,7 +53,7 @@ will dramatically decrease the performance. It is recommended that you also tune your CD-ROM drive with <command>hdparm</command>: -<screen>hdparm -d1 -a8 -u1 <replaceable>[cdrom device]</replaceable></screen> +<screen>hdparm -d1 -a256 -u1 <replaceable>[cdrom device]</replaceable></screen> </para> <para> @@ -68,8 +68,16 @@ </para> <para> -SCSI drives do not have a uniform way of setting these parameters (Do you know -one? Tell us!) There is a tool that works for +You may tweak the speed of SCSI CD-ROM drives with +<command>sdparm</command>, you need version 1.03 or higher: +<screen>sdparm --command=speed=<replaceable>[speed in kB/s]</replaceable> <replaceable>[cdrom device]</replaceable></screen> +Speed must be specified in kilobytes per second, the drive will +round it as appropriate. Please refer to sdparm man page for +details. +</para> + +<para> +There is also a dedicated tool that works for <ulink url="http://das.ist.org/~georg/";>Plextor SCSI drives</ulink>. </para> </sect2>
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