On Wed, 2005-04-13 at 01:24 +0300, Kostas Sfakiotakis wrote: > Brian Gaynor wrote: > > On Mon, 2005-04-11 at 16:36 -0700, Rick Stevens wrote: > > > > > >>Personally, I NEVER TRUST THE "CS" SETTING! It is totally unreliable. > >>Jumper one drive as "MA" (ideally, the one you're using now) and the > >>other as "SL" and you should be fine. > > One persons opinion, but not true across the board. Otherwise why would ALL new systems and drives be delivered as CS.? > > > > I have never personally seen problems with drives set to Cable Select on > > a modern machine. Many high-volume manufacturers (Dell and Compaq are > > two I have personal experience with) have been shipping CS configured > > machines for 6 years or more. > > If the drive marked as Cable Select or "CS" is together with a drive > jumpered > as Slave , then the IDE controller replaces the cable select with > "Master" whereas Brian, This is counter intuitive, and not always true. It depends upon where on the CS cable the cs drive is attached. > if the drive marked as Cable Select is together with another one marked > as Master > then the Cable Select is considered as "Slave" . Special Care is needed > in case > the Cable Select is alone . At that point am not certain that the > Controller can replace > the Cable Select setting with "Single". It does that flawlessly for me, and I have never had a problem since I began using exclusively CS jumpering on the drive and a cable select cable. > I know for certain that my 160 > GB Western Digital > hard disk has different jumper positions if it alone "Master w/o Slave" > or Master if a slave > disk is present . By the way this very disk ( 160 GB WD ) was originally > shipped to me as > Cable Select , probably because the shop didn't new my hard disk > configuration and > so it had the most "compatible" position . Default jumpering from all manufacturers I have used in the last 5 years, since all new systems being built use the cable select cable. > IMO it would be preferable > not to use > the Cable Select setting even when there is no ambiguity about what the > drive realy is . > Cable select is exactly what it says, and is VERY reliable in my experience. -Use a cable select cable -plug the drive to be used as master to the connection designated as master. -plug the drive to be used as slave to the connection designated as slave. -jumper both drives as cable select (CS) With this config it does not matter if you have 2 drives or one, they will always be seen as master or slave depending upon where they are connected on the cable. Of course there are a few (VERY FEW) drives that will have problems, but I think they are all also very old, and new drives will not have any problems being (single/master/slave) on the cable. Please note that most new drive cables are UDMA and cable select as well. I can't remember when I last saw a new IDE cable that was not UDMA. I may also note that the only time I have ever had a problem with IDE drives on a cable select cable has been when the user (customers of mine) chose to jumper the drives as master/slave and they were using a cable select cable. They got intermittent errors due to the jumpering conflicts. The permanent fix ---- rejumper the drive to CS. (Really easy to fix.) > Kind Regards, > Kostas > >
