Have any of you guys been working with the OEM Panasonic 24x CD-ROM (model
CR-585-B) or any other high speed drives flooding the market these days ?
I purchased one recently and tested out "running Linux directly" off the CD-ROM and the installation went quite smoothly. Somehow I felt that it wasn't
"blazing" fast enough (of course I am *not* expecting hard disk performance
or equivalent) but still it seemed only slightly faster that a 4x.
I also found some info (not relavant to Linux) when I called up panasonic
support. They told me that it is indeed a 24x cd-rom but they don't have
drivers ready yet (for win 95 or NT). The drive came shipped with a floppy
with dos based drivers that are also said to be compatible with the new DVD
Anyway, I tried the following to check its speed (courtesy CD-ROM HOWTO) :
# time -p dd if=/dev/cdrom of=/dev/null bs=1k count =15000
and it took a real time of 9 secs. That works to about 1666kb/sec and with
CD-ROM ratings of 150kb/sec = 1x this means I have a 11x drive ! This was
ofcourse the first time. The next time I tried, the real time was like
0.63 secs (due to caching I guess) and this doesn't make sense either
because now it is a 158x drive.
Assuming 11x is more realistic, is this all that the drive can be "pushed"
Or should I have to recompile a kernel with new settings (or something
like that) ?
Or is it just me :-)
I would appreciate your thoughts and insights.
Ramesh R. Rao