Dan contributed: >"Constitutes"? No. Termination is something you specifically set on >the device using a jumper or end-plug. SCSI chains must be >terminated at both ends. Apple's SCSI controller terminates the end >on the mother board. You have to explicitly terminate the other end, >usually by attaching a jumper across the termination pins on the last >device in the chain. > >The Seagate was terminated, so to put the Micropolis drive at the end >of the ribbon cable, you should have removed the termination on the >Seagate drive and terminated the Micropolis. > >FWIW, while scsi id collisions don't normally cause anything other >than a system hang or a missing drive, incorrect termination often >cause SCSI packet corruption, which in turn can put bad data on your >drive... ________________________ That's great Dan, thanks!
These bits of info are like gold nuggets on a creekbed right about now. I just put the Seagate back in by itself and am about to give it another try. Is the bad data more likely to be directory and system-related and if so is it repairable by the likes of TT Pro 3 and Disk Warrior etc., or can it happen in any files? I got a little casual cause I've been popping drives in and out of the center bay of my 660 to ready them for give-away 68K machines - the ID Jumpers on those under-200MB drives are easy to understand by comparison to this Micropolis. But how I've been getting away with no conscious "termination" re. my Centris 660AV center bay, is now a new mystery. Thanks much, Terry -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
