cherylchase Posted May 2, 2002 Report Share Posted May 2, 2002 I am trying to backup to my STT20000N (Seagate SCSI Travan) from a G4 dual processor, Macos 10.1.4, via an Adaptec 2930CU scsi card. Neither Apple System Profiler nor Retrospect 5.0 sees the tape drive at all (device status shows SCSI ports 0-6 with no attached devices). It does see my ZIP drive, attached to the same SCSI card, but as a separate device (not on a scsi port). Do I need a driver for the Seagate? Seagate support claims no. Thanks, Cheryl Following is part of ioreg output relating to scsi adapter: | | +-o ADPT,2930CU@4 | | | +-o ADPT7860SCSIController | | | +-o IOSCSIParallelDevice@1 | | | | +-o IOSCSIParallelInterfaceProtocolTransport | | | | | +-o IOSCSIPeripheralDeviceNub | | | | | +-o IOSCSIPeripheralDeviceType00 | | | | | +-o IOBlockStorageServices | | | | | +-o IOBlockStorageDriver | | | | | +-o IBM DNES-309170 Media | | | | | +-o IOMediaBSDClient | | | | | +-o IOApplePartitionScheme | | | | | +-o Apple@1 | | | | | | +-o IOMediaBSDClient | | | | | +-o Macintosh@2 | | | | | | +-o IOMediaBSDClient | | | | | +-o Macintosh@3 | | | | | | +-o IOMediaBSDClient | | | | | +-o Macintosh@4 | | | | | | +-o IOMediaBSDClient | | | | | +-o Macintosh@5 | | | | | | +-o IOMediaBSDClient | | | | | +-o Patch Partition@6 | | | | | | +-o IOMediaBSDClient | | | | | +-o untitled@7 | | | | | +-o IOMediaBSDClient | | | | +-o IOSCSIUserClientIniter | | | | +-o IOSCSIUserClient | | | +-o IOSCSIParallelDevice@5 | | | +-o IOSCSIParallelInterfaceProtocolTransport | | | | +-o IOSCSIPeripheralDeviceNub | | | | +-o IOSCSIPeripheralDeviceType00 | | | | +-o IOBlockStorageServices | | | | +-o IOBlockStorageDriver | | | | +-o IOMEGA ZIP 100 Media | | | | +-o IOMediaBSDClient | | | | +-o IOFDiskPartitionScheme | | | | +-o Untitled 4@4 | | | | +-o IOMediaBSDClient | | | +-o IOSCSIUserClientIniter | | | +-o IOSCSIUserClient | | +-o usb@8 Link to comment Share on other sites More sharing options...
AmyJ Posted May 6, 2002 Report Share Posted May 6, 2002 If the computer itself is not seeing the drive, you should try changing cables and termination. Also, try the drive on another computer. If it is still not showing up, you may have a faulty drive. Link to comment Share on other sites More sharing options...
cherylchase Posted May 6, 2002 Author Report Share Posted May 6, 2002 It works fine under OS 9, so obviously this is not a hardware problem. Cheryl Link to comment Share on other sites More sharing options...
Drishmung Posted May 7, 2002 Report Share Posted May 7, 2002 Well, maybe not. Mac OS X is incredibly fussy about SCSI, so cable setups that work OK under Mac OS 9 sometimes don't work OK under Mac OS X. I'm not saying that this is the case here, but you might want to check the system log to see if there are any SCSI errors being reported. However, what I think is more likely is that you need a driver. Mac OS X I/O is based on Mach, which is not only different from Mac OS 9, it's also rather different from most Unixes. Essentially, the SCSI driver needs to detect that the Travan is there, in which case it adds the device into the device tree (as per your IOReg dump). When it does this, it does not tightly tie it to the SCSI card, which is why your Zip shows up where it does. (It's confusing, or at least I found it so until I started digging around to find out what was going on). Until and unless the SCSI driver detects the device, normal applications can't touch it. (I'm not sure if Retrospect counts as 'normal'. It could play directly with the IOKit---in fact I suspect it does, but not enough to see the Travan, it seems). The fixes for this are: A better Apple SCSI driver (sigh, how I wish!) A Kernel Extension (kext) to support the Travan Alas! you might be in for a long wait. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.