At 16:09 -0700 4/3/05, Jake Norcross wrote: > So, I yanked it out and replaced it with the >250Mb from my external. > >Now it won't find the drive-- as though it doesn't >exist. > >WHY?????
Almost surely because the drive is not terminated properly >I noticed two comb-like things (jumpers?? >Capacitors??) taped to the top of it when I took it >out of the enclosure. . . do I have to put them in, >and does it matter which slots I put them in? They are terminating resistor arrays. They need to be in place on the internal drive and the only reason they were not in place in an external drive is if there were other SCSI devices on the external cable. Only the last device should be terminated. Which slot does not matter but which end of each chip does. Look for a printed dot on the chips and match it up with a corresponding dot on the printed circuit board of the drive. Failing that see if you can find a picture on the manufacturer's web site. They're pretty good about such things. More modern drives have a single jumper that logically tells the drive to use its soldered-in terminators or not. There are other possible jumpers like automatic spin up and terminator power. Come back for more if you need to. You may also want to change the SCSI ID. Three jumpers labelled A0, A1, and A2. It's "standard" to have the internal drive be SCSI 000 with all jumpers removed but it's not a requirement. All devices on a SCSI chain have to have different ID's. ID 7 with all jumpers in place is reserved for the Mac itself. -- --> The best programming tool is a soldering iron <-- -- Compact Macs is sponsored by <http://lowendmac.com/>. Support Low End Mac <http://lowendmac.com/lists/support.html> Compact Macs list info: <http://lowendmac.com/lists/compact.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/compact.macs%40mail.maclaunch.com/> --------------------------------------------------------------- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---------------------------------------------------------------
