>Message-Id: <[EMAIL PROTECTED]> >From: James Riesterer <[EMAIL PROTECTED]> >Subject: G3 mods and dilemmas (posted by proxy) >Date: Sun, 8 Feb 2004 14:47:38 -0500 > >...snip... > >I was given a beige G3/300 MT lately which was supposed >to be dead. I succeeded to revive the thing with the help >...snip... > >There are still some woes, however: > >...snip... > >I have two UW SCSI-drives in the G3 now running from a >Formac ProRaid UW-controller, a 9 gig Seagate Elite and >a 18 gig IBM which I pulled from my old 7100/80/Crescendo >400 Mhz (the original Adaptec UW controller had been >pulled along with the original 4 gig UW drive). When I >choose the IBM as startup-disk, the Mac will only >sporadically start from it. Often it doesn't see the >drive and starts from the Seagate. Then I have to mount >the IBM with a mounting utility. This happened with OS >8.6 on both drives and still happens with OS 9.1 on the >Seagate and OS 8.6 on the IBM. > ...snip... > >TIA, cheers, J=F6rg. > >[EMAIL PROTECTED] >
Your comment about hard drives not being recognized on the SCSI bus had a familiar ring. Here is my long story, but I should warn you that despite trying a lot of remedies, I found no real cure. I have two Performa 6115s and a 6116. All of them are really PowerMac 6100s. Two have NewerTech G3 accelerator cards and HPV video cards, extra RAM, and a big external hard drive. Lately I've been using one of them, usually under System 7.6.1. [For reading and writing documents, moving files around, and snappy performance, I really like System 7.6.1 better than its successors.] So this accelerated Performa (300 MHz) is a real pleasure to use -- most of the time! After several years of faultless operation, I began to have problems similar to yours with a 4.3 MB IBM internal SCSI drive I had installed. From time to time this HD would fail to be recognized on startup. Occasionally it would start up successfully, but its icon would disappear from the screen after a few hours' use. In such cases, there was no way to make a mounting utility do anything -- the drive was simply not there as far as the SCSI bus could tell. (This sounds different from what you reported.) I tried everything I could think of to make the system reliable. Sometimes a sharp slap on the computer case near the HD would make it work. I tried moving this HD from one computer to another (effectively changing mother boards and SCSI circuitry), but not one of the three gave me the trouble-free operation I used to have. Among other parts I replaced or moved from one computer to another were power supplies (cleaned thoroughly inside and out), the accelerator cards, the extra RAM sticks, the four-wire HD power cable, and the ribbon cable connecting the HD (and the internal CD drive) to the mother board. I bought a (used) Seagate 9 GB SCSI drive and tried it for a while in place of the IBM drive, but soon the same troubles started to occur. This made me think that perhaps that _all_ of the ribbon cables I had might be faulty. So I bought another ribbon cable (used, I suppose) but found it to be no better. I am still baffled as to what was causing the problem, but about 6 or 8 months ago I decided to retire both the Seagate and IBM drives. For my internal drive I'm now using one of the original 350 MB drives that came with the Performas. The SCSI non-recognition trouble has not recurred, an advantage that comes near to compensating for its small capacity. Melvyn Halbert -- 1st-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> 1st PowerMacs list info: <http://lowendmac.com/lists/1st-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]> List archive: <http://mail.maclaunch.com/lists/1st-powermacs/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
