On Sunday 07 August 2005 13:29, Claude Jones wrote: >On Sun August 7 2005 1:06 pm, Jim Cornette wrote: >> Just reporting something that came up in postings earlier >> regarding cable select settings vs. setting the jumpers on the >> devices, I tried cable select on my drives because I wanted to >> swap the primary CDROM with the Secondary DVD burner. The jumpers >> set to master / slave worked fine when the CDROM which is on the >> secondary of the cable select cable. The CDROM was set to master, >> While the DVD was on the master of the cable select cable. >> When I changed the DVD to master and set the CDROM to slave. both >> set to the same position on the cable select cable, the devices dd >> not become recognized correctly. (CDROM on secondary, DVD on >> primary) Changing the devices to both cable select allowed the DVD >> to be master and the CDROM burner to be slave as desired. >> >> This is sort of a retraction and a note that jumper selection >> settings on a cable select IDE cable can cause trouble, primarily >> with the secondary connector on the cable selectable IDE cable. > >I see all sorts of declarative statements on this subject, here, and > they are generally wrong. One thing I do in my job is hardware > maintenance for a large collection of PC's of varying vintage, and > with many different configurations. I've messed with bad > jumper/cable select settings for years. The thing that can really > bite you, because it's easy to forget/overlook is the following > scenario: it is possible to get a system to work with a cable > select cable, and the devices jumpered master/slave, or one > jumpered master or slave and the other jumpered cable select - it's > unpredictable, but when it works, it just seems to, well..., work. > Scroll forward six months or a year, and you or someone else has to > replace one of the devices; it's easy to waste a lot of time > because you don't know, or have forgotten, that the system is > configured improperly, and with the new device, things don't just, > well...., work. If you have a cable select cable, jumper your > devices "cs" - if you have a standard non-cs cable, jumper your > devices master/slave. Follow this convention, and you won't have > problems - I'd be willing to bet that everyone who's declared that > you should ignore these protocols, and always jumper master/slave, > or some other variation on this argument, have simply been lucky - > they are victims who just haven't been bit, ............., yet! > >-- >Claude Jones >Bluemont, VA, USA Nice idea Claude, but can you tell us how to tell the difference between the cables so that we can properly identify them? -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) 99.35% setiathome rank, not too shabby for a WV hillbilly Yahoo.com and AOL/TW attorneys please note, additions to the above message by Gene Heskett are: Copyright 2005 by Maurice Eugene Heskett, all rights reserved.
