Re: Cd destroyed in cd drive
on Sat, Feb 22, 2003 at 02:25:11PM -0500, Tertrainman@aol.com (Tertrainman@aol.com) wrote:
> Hi, I was wondering how a cd could break into pices in a cd drive?
Yes.
I've had it happen -- once. This was business-card format media
(minidisk cut to a rectangular format). Being a copy of the LNX-BBC I
carried with me pretty much everywhere, I noted a developing crack as I
put it into my 40x CD drive. As it spun up there was a distinct
*crack*.
I had to pull the drive, and open the drive case itself, to remove the
remaining shards. The drive wasn't damaged, but I suppose this could
happen. Injury to people (eyes in particular are fragile things) could
happen as well should any fragment penetrate or bypass the front of the
drive.
Base speed of a CD audio drive is 200 RPM. A nominal 52x drive runs at
just over 10k RPM. In practice, better drives use multiple read heads
to increase throughput, so actual YRMV[1][2].
Slashdot carried an item in the past year or so of tests conducted to
destructive deformation of CD media. According to the test this occured
pretty consistently at 28k RPM.
http://slashdot.org/article.pl?sid=02/07/22/0311248
http://www.guru3d.com/cgi-bin/newspro/ktalk/1029504097,32357,.shtml
Peace.
--------------------
Notes:
1. Your RPMs may vary.
2. And you really *don't* want me to discuss the difference in CDROM
speed ratings on Debian and Red Hat systems, and why disk extraction
bitrate is morally superior....
;-)
--
Karsten M. Self <kmself@ix.netcom.com> http://kmself.home.netcom.com/
What Part of "Gestalt" don't you understand?
Integrity, we've heard of it: http://www.theregister.co.uk/
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