I have 2 S900s but one is kaput. It has a Sonnet G4 400, 1 GB ram and 
a 40 GB IBM HD, partitioned to 8, 10, 10, 10 GB each.  I had system 
9.1 in the 10 GB partitions.  It died suddenly.  Previous to its 
death, I had examined the system with Nortons 6, Disk warrior and TTP 
3.0.4 and corrected all problems.  I pronounced the system as 
healthy.  I was prepping this machine for another attempt at OS X 
when I saw Lyle Anderson's post "[SM] Quiver in my back bone" where 
he was able to install X from his Jaguar disks on an S900 without any 
other of the usual necessary preps.  Thinking well that sounded too 
good to be true, but I tried to boot from the Jaguar install disk. 
Nothing. The CD light flickered a little and death followed.

Now there is the start up chime but nothing follows.  No video.  I 
zapped with the CUDA, tested the battery, took out all USB, Firwire 
and Ethernet cards, pulled all ram except 1-128 MB stick. Nothing.  I 
swapped cables from the working S900 and exchanged the video cards 
too.  I also put in the old 604e card and that didn't help.  The pram 
can't be zapped by the option-Apple-p, r keys as there is only 1 
chime.

The OS 9.1 Apple CD won't boot either with the "c" key or the shift, 
option, Apple, delete key combo.  Starting with shift key down also 
doesn't help. The light on the CD player with a system disk in comes 
on at startup but only stays on for 6 seconds and then goes off. I 
pulled the HD and connected it to my other working S900 and had no 
problems starting from it.

I pulled the CD player (model CR-508-B) and looked at the jumpers as 
Kennedy posted that if the "Sector Size" jumper on the back of the 
CD-ROM drive is in place, often the CD wouldn't boot from a system CD 
but on my CD drive, the sector size jumper if not in place. 
Previously I had no problems booting from a boot CD disk in this 
drive.

The Sonnet G4 board comes with a floppy that has a minimum system on 
it. Previously the system would start with this G4 Pram Restore 
floppy but not now. All other lights come on as does the fan but 
nothing else. Help! Any ideas? Thanks.
Eric

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