Interesting info thanks peterh... Just to close this thread, (although it seemed too have died anyway!)
I was having a problem with the new DVD drive tray fouling the gap in the MDD case, (I had done all testing with the cage loose and accessible, and the MDD opened to the elements). As it was a one- piece tray it was a question of Dremelling it or the case (both of which I was loath to do)..... ....anyway got a DVD drive BNIB at a car boot sale on Sunday with a detachable tray front...installed that and now the 'eject' icon correctly shows both drives, and works properly (the new one is a "Speedy" H16X - shows generic drivers installed under "Disk Burning" in System Profiler). Not tried burning yet but it works perfectly now as a R1 DVD drive for my movies! It is jumpered as slave and the other as master. Dan On Feb 3, 3:56 pm, [email protected] wrote: > > I did try drive 0 as slave and 1 as master - no change, also both as > > cable select - no difference. > > Is it perhaps a firmware issue, either with the G4 or the non-Apple > > drives perhaps? > > Early optical drives installed by Apple preferred Master, even though the > optical cable is indeed of the Cable Select type. These drives would not > work as Slave, just as the early Zips installed by Apple preferred Master, > too, which is why the early Beige G3s had SCSI Zips, if the Zip option was > chosen by the customer. Or, Apple ordered special versions of Zips which > WOULD work as Slaves, until Iomega finally fixed their flawed drives. > > Today, drives are a commodity, and there is very little difference between > them ... all are dual-layer burners and all will work properly as Master, > Slave or Cable Select, as is required by the customer, and at the > customer's sole option. > > The optical (and HD) bus cable is Cable Select for the simple reason that > the firmware is using H-P's patented method of detecting the presence of a > drive, detecting the drive's performance characteristics, and programming > the host bus adapter appropriately. > > However, after POST, the machine does not use Cable Select, it uses Master > and Slave. > > Interested readers can consult US Pat 6,523,071 for the details, which > teaches how a specific drive can be placed into a reset state, > interrogated, and the host bus adapter (the Mac itself, in this case) can > be programmed to best handle the drive. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
