From: "Mark & Jennifer Stacy" <[EMAIL PROTECTED]>
To: "PCI PowerMacs" <[EMAIL PROTECTED]>
Sent: Thursday, September 06, 2001 1:29 AM
Subject: 7500 and 12X CD-ROM Upgrade
> Hello,
>
> I've recently signed up for this list and I've been watching some
> interesting upgrade discussions. Now I've got a question that I'm
> hopeful you gurus can answer. I recently purchased a used 12X CD on
> eBay and was told by the seller the drive was in good operating
> condition. Well, I received the drive a couple days ago and
> subsequently installed it at SCSI#3 with the same configuration and
> cable hookups as the 4X drive I had removed. Note the 4X drive was my
> 7500's original drive. When I powered the 7500 back on and checked
> Apple System Profiler, the 12X drive was not found on the SCSI chain and
> simply pushing the button to eject the disk tray resulted in nothing.
> The drive appeared to be receiving no power. Needless to say, I quit
> for the night.
I had a similar problem with replacing my 8x in 7600 - set the jumpers and
ID the same on a Sony 12x replacement (8x went into another box with
a 2x). No go. CD-ROM-is-Interruptist ':(
I reshuffled the order of the SCSI devices so each chain had 0 and 1.
0 was the boot disk. I have a total of 2 internal HD's, plus the CD, and
an external HD in a case with a SCSI Zip hanging off of it.
Try a different combination - my symptoms were the same - no light, and
no eject. I'd installed the new with the same setting as the old, but no
go. Then the old refused to work once put back in. I had once advantage
with the external case in that I was able to verify the drive worked hanging
it off another Pmac.
>
> Tonight, I decided I'd reinstall the 4X CD to determine whether I had a
> bad 12X drive because that was the conclusion of a local Mac tech and
> one of the columnists for LowendMac. Much to my surprise, the same
> thing happened to the 4X drive after I reinstalled it. The disk tray
> would not eject and System Profiler couldn't find it. As far as I know
> this drive was working only a day ago. Anyway, I'm stumped and look
> forward to hearing whatever helpful suggestions any of you may have.
Well, you've redecorated since your 4x moved out and it's natural that
it may not work any longer. You need something more like the CD-ROM
toolkit vs. the system profiler (the latter tells you what IS there, not
what
is there but not recognized). CDROM Toolkit also has some caching
and other enhancements - it came with my drive from OWC (~$40 US
for the Sony drive and software).
Sorry I cannot be more specific as I am at the Evil Empire machine today,
and cannot check my Mac config. If you're still stuck, e-mail me off list
and I might be able to help.
Steve
[EMAIL PROTECTED]
>
> Sincerely,
> Mark
>
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