I've got the silver 733 G4 with an Adaptec 2906 SCSI card in it running a chain of three old SCSI devices (two scanners and a SyQuest drive. The device on the end of the chain is terminated with a terminator block). Usually the devices on the SCSI chain are left turned off until I need them, then I turn them on during a restart. Whenever the Mac starts acting really goofy, though, I just unplug the external chain and everything goes back to normal. When I next need some device on the SCSI chain again, I power down the Mac, plug the SCSI cable back into the card, and use the scanners or whatever, then usually leave the external SCSI chain plugged in until the next time it causes trouble (I'm lazy and it's hard to reach back there behind the Mac among all the cables). I have some partitions on my Mac's internal drives that are left unmounted until I need them, for example, and often they won't mount (using Hard Disk SpeedTools) on the desktop until the SCSI chain is unplugged.
I thought most of my trouble was just the crummy Adaptec 2906 SCSI card that so many people report having problems with, but from Phil's experience below it sounds like the more expensive 2930 card may not be much better. Or maybe these G4 towers just don't like SCSI. Tom At 11:53 PM -0400 07/02/2002, philphil wrote: >Hello All: > >I would like to thank each of you for responding/commenting to the above >issue. > >I have isolated the problem, but I can't solve it. > >The Silver 677 has a Adaptec 2930 SCSI card with an external chain of >devices (some 3rd party external HD, APS Jazz Drive with Active Termination, >and another APS external HD as the last device) > >There is a 60 gig IDE master (Seagate Barracuda ATA) came with the Mac, he >added the 100gig last weekend as slave. The other ATA bus has only the >superdrive. > >Now, as long as the SCSI chain is on and connected to the card, the IDE >drives will not mount. >Once the SCSI chain is pulled or turned off, the two IDE drives mount fine. > >Once OS 9.2.2 mounts it correctly, the 100 gig is also mounted when booted >into OS X.1. > >I am waiting for a reply from Adaptec. > >Phil Wong -- G-List is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- We have Apple Refurbished Monitors in stock! | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-List list info: <http://lowendmac.com/lists/g-list.shtml> 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/g-list%40mail.maclaunch.com/> Using a Macintosh? Get free email and more at Applelinks! <http://www.applelinks.com>
