Let's see if I can clear up some of the confusion, or at least stir up the pot a little bit more. ;-) My answers are between your questions.
<<so my question, lobbed into this thread, is: my 6360 comes native with an IDE hard drive, a SCSI CD ROM drive, and floppie, internally. externally it has the usual mac SCSI port out back. what am I doing if I trade out these native devices inside the case, and instead put in an IDE DVD drive on the IDE ribbon, a SCSI hard drive on the SCSI ribbon, and leave the floppie in? will this work?>> I don't see a problem with this. However, you will have to find software that will let you use the DVD drive, like Toast. IDE: If you are adding the DVD drive, then either the hard drive or the DVD drive needs to be set to 'Master', and the other one set to 'Slave'. This is because you can only have two devices on an IDE/ATA bus. If you are swapping the IDE hard drive with the DVD, then the DVD needs to be set to 'Master'. SCSI: If you are adding the SCSI hard drive, then you need to set its SCSI ID with jumpers (the CD-Rom should be set to 3 already) and depending on where, physically, you put it on the SCSI chain, will need to terminate or un-terminate it. If the CD-Rom currently in there is the only SCSI device on the chain, then it is terminated. If you are swapping the CD-Rom for the hard drive, then you will need to terminate the hard drive, as well as set its SCSI ID. <<if as bruce says, SCSI and IDE can't be on the same bus, then what is the structure of my 6360, internally? and what does it do if I trade out the native devices for my proposed substitutions?>> True. IDE and SCSI devices cannot be on the same bus. I believe you have 3 busses. One internal IDE/ATA bus. One internal SCSI bus. One external SCSI bus. Let's look at the ASP you quoted: <<bus and gave it the ID of "0 ". My whole SCSI chain configuration looks like this: <<Original 2 gig HD � � � Bus 0, ID 0 <<CD-ROM � � � � Bus 0, ID 3 <<SCSI Zip drive Bus 1, ID 6 <<Maxtor 60 gig HD � � � Bus 2, ID 0 Bus 0, in this case is the internal SCSI bus Bus 1, is the external SCSI bus Bus 2, is the internal IDE bus <<if i move my CD ROM drive and a CD burner out onto the external SCSI chain?>> No problem as long as you give each item a unique SCSI ID and terminate the last physical device, and no others on the external chain. <<how many buses does my 6360 have on it, and how many devices can go on each one?>> Three. See above. IDE/ATA can have two devices , and each SCSI bus can have 8 (0-7). However, you really can only have 7 (0-6) as the motherboard SCSI controller is one. <<and will that SCSI hard drive be in a position to be bootable, if I put it where the IDE drive went inside the machine, but connected to the ribbon the CD ROM originally was expected to use?>> Yes, IF, it is a bootable drive, (Apple drive utilities can format it/install an Apple driver on it) and you install an OS on it. << and conversely, if i put the DVD where the CD ROM was, and connect that DVD on the IDE ribbon that was expected to end in the original harddrive , will it confound the machine?>> No, I don't think so. The computer should recognize it, but you will have to get software (Toast?) to be able to use the DVD drive. You might be able to read CD-Roms, but beyond that, well I don't know. If, however, you are hoping to watch DVD movies or use DVD disks, I think you're in for a rude awakening, or lots of software hacks. Clear as mud? STeve -- 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
