Cable Select vs. Master/slave settings
Claude Jones
claude_jones at levitjames.com
Sun Aug 7 19:27:43 UTC 2005
On Sun August 7 2005 3:19 pm, Gene Heskett wrote:
>
> Nice idea Claude, but can you tell us how to tell the difference
> between the cables so that we can properly identify them?
>
Sure. The cs cables are always marked. Look near the connectors. Different
manufactures will use different terms, but there will nearly always be a
clear set of markings (like HD0, HD1), printed on the cable near the
connector, or rarely, on the connector itself. I have encountered cables used
by OEM's in cheap systems in the past, that were cs, but did not have any
indication. That's why I qualified my 'always marked' statement by 'nearly
always' one sentence later. In the past several years, I only encountered
that once.
So: if you're building a system, if the cable has no markings on or near the
connectors, jumper your devices master/slave. If you see markings that
intuitively denote 'device1/device2', then try the cs jumpering first. And,
always double check yourself - maybe it's just me, but, I get wrapped in the
details, especially when I start parts-swapping to troubleshoot, and have
been burned by bad jumpering more than once. Several times, in the throes of
intense concentration, I've left a device jumpered master or slave, and the
other jumpered cs - and that will sometimes work, but, it can lead to strange
problems down the road that are very hard to diagnose.
--
Claude Jones
Bluemont, VA, USA
More information about the fedora-list
mailing list