Has this ever happened to you?

2012-08-27 Thread smac0031
I was playing my favorite game, Master of Orion II. Then I quit the
game and ejected the CD and noticed there was a crack in the inner
ring. So I decided it might be a good time to make a backup copy of
this CD, if it were possible. I tried Disk Utility first and thought
it might be better to use Toast 9.0. I started running the program and
suddenly the plastic CD button goober shot out of the mirror door. I
got a cryptic disc has read errors message. I tried ejecting the
disc both using eject button on the keyboard and the eject button on
the front of the drive, which by the way is a Samsung from other
world.

None of this worked. The drive wouldn't open. I tried a paper clip and
that wouldn't work. I tried rebooting the machine and that didn't
help. I gave up and shut the machine down and pried the drive open.

The CD was in chunks. It literally exploded in the the drive. I have
probably 40% of it out of the drive in six pieces.

I've never heard of this happening. I loved that game. This sucks.

Now I don't have any excuses to switch over to my G5, no even lame
ones.

Mark Murphy

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G4 MDD SCSI (pref non PCI)

2012-08-27 Thread Oliver Fairhall

Hi folks,

I have a G4 MDD (FW 400, not 800 model), which I would like to add SCSI 
to. All my PCI slots are taken up. I am mainly using this with OS 9.2.2. 
I would like to know what is the best featured/most reliable option for 
adding SCSI for this machine, that doesn't use a PCI slot?


I use the machine as a legacy DSP farm for my home music studio. I use a 
Korg OASYS PCI card, which will not run under OSX. My idea for the SCSI 
was to interface with my old hardware samplers (EMU/Ensoniq/Akai).


I have read about some Firewire and USB SCSI adapters, but information 
is a little sparse as to how these really perform in practice. Some also 
don't allow a complete SCSI chain, just one device. If really necessary, 
I could possibly try to free one PCI slot, but I would really rather 
not. It seems that some PCI SCSI solutions were more highly regarded. I 
certainly would not want too much hassle with an unreliable solution, if 
that's all I would get with USB/Firewire SCSI adapters.


BTW, I have heard of PCI expansion racks to add more PCI slots; are 
these any good? Is there a performance degradation with these?


Thanks for any pointers/advice.

Cheers,

Oli

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Re: Has this ever happened to you?

2012-08-27 Thread Clark Martin

On Aug 27, 2012, at 7:29 PM, smac0031 wrote:

 None of this worked. The drive wouldn't open. I tried a paper clip and
 that wouldn't work. I tried rebooting the machine and that didn't
 help. I gave up and shut the machine down and pried the drive open.
 
 The CD was in chunks. It literally exploded in the the drive. I have
 probably 40% of it out of the drive in six pieces.
 
 I've never heard of this happening. I loved that game. This sucks.
 
 Now I don't have any excuses to switch over to my G5, no even lame
 ones.

You should check out the Myth Busters episode about exploding optical drives.  
It was one of their first episodes.  Short story is that with normal discs no 
drive they tried could destroy a disc.  I think they did have some failure 
after abusing the discs (Microwaving was one method).  They finally got a 
normal disc to fail by mounting it on a die grinder and, IIRC, running the die 
grinder off of 220V, twice it's rated voltage.



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Re: G4 MDD SCSI (pref non PCI)

2012-08-27 Thread Clark Martin

On Aug 27, 2012, at 10:45 AM, Oliver Fairhall wrote:

 I have a G4 MDD (FW 400, not 800 model), which I would like to add SCSI to. 
 All my PCI slots are taken up. I am mainly using this with OS 9.2.2. I would 
 like to know what is the best featured/most reliable option for adding SCSI 
 for this machine, that doesn't use a PCI slot?
 
 I use the machine as a legacy DSP farm for my home music studio. I use a Korg 
 OASYS PCI card, which will not run under OSX. My idea for the SCSI was to 
 interface with my old hardware samplers (EMU/Ensoniq/Akai).
 
 I have read about some Firewire and USB SCSI adapters, but information is a 
 little sparse as to how these really perform in practice. Some also don't 
 allow a complete SCSI chain, just one device. If really necessary, I could 
 possibly try to free one PCI slot, but I would really rather not. It seems 
 that some PCI SCSI solutions were more highly regarded. I certainly would not 
 want too much hassle with an unreliable solution, if that's all I would get 
 with USB/Firewire SCSI adapters.
 
 BTW, I have heard of PCI expansion racks to add more PCI slots; are these any 
 good? Is there a performance degradation with these?
 

Well, forget USB, OS 9 only supports USB 1.1 so you'd be limited to 12MBps. 

Most of what I know about the Firewire - SCSI adapters is that they are rare. 

What other PCI cards do you have, maybe there are some options there.

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Re: Has this ever happened to you?

2012-08-27 Thread Richard Gerome

 There is probably only 2 things that could have caused this: 1st the CD 
broke going in when the thing comes down to grab the disc by the hole because 
of a miss alignment or 2nd It spun up to over 10,000rpm maybe it was 20,000 
(Just like Clark said about Myth Busters figured out how much rpm would cause 
it to explode)...  Now what I think happened was the first thing? Once they 
crack it will weaken them and the spinning of the drive would cause them to 
explode..?  




-Original Message-
From: smac0031 m.smurph...@gmail.com
Sent: Aug 27, 2012 10:29 PM
To: G-Group g3-5-list@googlegroups.com
Subject: Has this ever happened to you?

I was playing my favorite game, Master of Orion II. Then I quit the
game and ejected the CD and noticed there was a crack in the inner
ring. So I decided it might be a good time to make a backup copy of
this CD, if it were possible. I tried Disk Utility first and thought
it might be better to use Toast 9.0. I started running the program and
suddenly the plastic CD button goober shot out of the mirror door. I
got a cryptic disc has read errors message. I tried ejecting the
disc both using eject button on the keyboard and the eject button on
the front of the drive, which by the way is a Samsung from other
world.

None of this worked. The drive wouldn't open. I tried a paper clip and
that wouldn't work. I tried rebooting the machine and that didn't
help. I gave up and shut the machine down and pried the drive open.

The CD was in chunks. It literally exploded in the the drive. I have
probably 40% of it out of the drive in six pieces.

I've never heard of this happening. I loved that game. This sucks.

Now I don't have any excuses to switch over to my G5, no even lame
ones.

Mark Murphy

-- 
You received this message because you are a member of G-Group, a group for 
those using G3, G4, and G5 desktop Macs - with a particular focus on Power 
Macs.
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guide is at http://www.lowendmac.com/lists/netiquette.shtml
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Scars only tell us where we have been, they do not have to dictate where we are 
going...

“Choose love and peace above all other options.  Commit to the goal of 
unconditional love and compassion for all life, in all its expressions, and 
surrender all judgment to God.

--- Dr. David R. Hawkins

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Re: G4 MDD SCSI (pref non PCI)

2012-08-27 Thread Kris Tilford

On Aug 27, 2012, at 12:45 PM, Oliver Fairhall wrote:


All my PCI slots are taken up.


All three? Isn't there one card you could move or sacrifice?

I would like to know what is the best featured/most reliable option  
for adding SCSI for this machine, that doesn't use a PCI slot?


You covered the options, which are few, rare, and probably not optimal.

I have heard of PCI expansion racks to add more PCI slots; are these  
any good?


Even if you had an expansion rack, where would it go so you could  
mount the cards? This would seem to be kludgy unless you plan some  
serious mod work to adapt such a rack into your G4. There are old Macs  
with 6 PCI slots which would be cheaper for the entire Mac than adding  
such an expansion rack.


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Re: Has this ever happened to you?

2012-08-27 Thread Dan

At 7:47 PM -0700 8/27/2012, Clark Martin wrote:
You should check out the Myth Busters episode about exploding 
optical drives.  It was one of their first episodes.  Short story is 
that with normal discs no drive they tried could destroy a disc.  I 
think they did have some failure after abusing the discs 
(Microwaving was one method).  They finally got a normal disc to 
fail by mounting it on a die grinder and, IIRC, running the die 
grinder off of 220V, twice it's rated voltage.


Loved that ep!

Older discs can become rather brittle, especially if damaged in any 
way.  I've had two ancient discs break apart in the drive.  That 
ramp-up after a read error is killer, crack-crunch-screch...


- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.

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Re: G4 MDD SCSI (pref non PCI)

2012-08-27 Thread Oliver Fairhall

Hi Clark,

Thanks for your reply.

My other PCI cards are Creamware/Sonic Core Scope DSP cards (3x) and one 
AGP video card. The Scope cards can run under OSX, but I'm mainly 
working with 9 due to the OASYS PCI. I'm also more familiar with OS 9 
than X.


As for slow transfer rates with USB 1, I could possibly live with that. 
In most cases, it would be fairly small transfers.


My main concern is reliability and functionality. This area is pretty 
new to me. I used to use Amiga for music back in the day, but often 
heard about other users with pro samplers connected via SCSI to their 
Macs (I think G3 mainly). There is host control software to run under 
Mac OS 9 for this. I have the samplers now (they are cheap at this 
point) and really like the sounds I can coax from them, but would like 
to integrate them into my computing environment. I don't really know 
what I'm doing though.


I have read a little about Magma PCI expansion chassis which are 
supported under OS 9. Never used one though. Would an Atto SCSI card + 
PCI chassis be a reasonable solution? Does adding an expansion chassis 
cause any issues with the PCI bus performance? As I'm running a lot of 
live DSP audio processing, which uses main memory to some extent, as 
well as some CPU load (I think not a lot though) I would not want to 
cause issues in the bus performance.


Thanks again for your help,

Oli

On 28/08/12 10:53, Clark Martin wrote:


On Aug 27, 2012, at 10:45 AM, Oliver Fairhall wrote:


I have a G4 MDD (FW 400, not 800 model), which I would like to add SCSI to. All 
my PCI slots are taken up. I am mainly using this with OS 9.2.2. I would like 
to know what is the best featured/most reliable option for adding SCSI for this 
machine, that doesn't use a PCI slot?

I use the machine as a legacy DSP farm for my home music studio. I use a Korg 
OASYS PCI card, which will not run under OSX. My idea for the SCSI was to 
interface with my old hardware samplers (EMU/Ensoniq/Akai).

I have read about some Firewire and USB SCSI adapters, but information is a 
little sparse as to how these really perform in practice. Some also don't allow 
a complete SCSI chain, just one device. If really necessary, I could possibly 
try to free one PCI slot, but I would really rather not. It seems that some PCI 
SCSI solutions were more highly regarded. I certainly would not want too much 
hassle with an unreliable solution, if that's all I would get with USB/Firewire 
SCSI adapters.

BTW, I have heard of PCI expansion racks to add more PCI slots; are these any 
good? Is there a performance degradation with these?



Well, forget USB, OS 9 only supports USB 1.1 so you'd be limited to 12MBps.

Most of what I know about the Firewire - SCSI adapters is that they are rare.

What other PCI cards do you have, maybe there are some options there.



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Re: G4 MDD SCSI (pref non PCI)

2012-08-27 Thread Oliver Fairhall

Hi,

I was hoping for a SCSI adapter running from the Firewire 400 bus. 
Haven't found one though. I'm not sure I really trust USB adapters for 
this purpose. Not so much from the transfer rates, but more because 
there have been so many poor quality USB interfaces (speaking 
generally), and due to the transfers being managed more directly by the 
CPU. My understanding is that Firewire not only has the superior 
bandwidth, but that it also features dedicated host control hardware to 
manage the transfers. Any advice on this matter would be appreciated.


The alternative I was considering was to have the SCOPE PCI cards hosted 
in the MDD PCI slots, a Magma PCI expansion host card in the last on 
board slot, and a PCI SCSI card + Korg OASYS PCI mounted within the 
expansion chassis. I don't know how well this would perform though. I 
guess it would be fine. I believe professional studios were doing 
something similar for running Pro Tools rigs back in the day.


I have a 19 equipment rack standing next to my MDD. I would likely 
house an expansion chassis there.


I originally chose the MDD as I had access to a cheap dual 1.42 GHz 
model with TI4600, 2 GB RAM (1.5GB usable, I know) locally. The faster 
memory bandwidth appealed to me for live audio processing/generation. I 
don't really know how much of an issue this is in practice though. Also, 
I used to use my father's old PPC 6600/60, and I have nightmares about 
slow performance in general.


Would you be able to recommend a different model with more PCI slots? I 
would rather not go too far back in terms of performance. If the memory 
bus is OK, and I can fit a decent single CPU accelerator, that would be 
fine.


I also considered picking up an old G3 laptop with on board SCSI just 
for interfacing with the samplers. However, my space is getting somewhat 
crowded/complicated for computers/instruments. I can add SCSI to my main 
studio PC, but some software will only run well under Mac OS 9.


Cheers,

Oli



On 28/08/12 11:25, Kris Tilford wrote:

On Aug 27, 2012, at 12:45 PM, Oliver Fairhall wrote:


All my PCI slots are taken up.


All three? Isn't there one card you could move or sacrifice?


I would like to know what is the best featured/most reliable option
for adding SCSI for this machine, that doesn't use a PCI slot?


You covered the options, which are few, rare, and probably not optimal.


I have heard of PCI expansion racks to add more PCI slots; are these
any good?


Even if you had an expansion rack, where would it go so you could mount
the cards? This would seem to be kludgy unless you plan some serious mod
work to adapt such a rack into your G4. There are old Macs with 6 PCI
slots which would be cheaper for the entire Mac than adding such an
expansion rack.



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Re: Has this ever happened to you?

2012-08-27 Thread Clark Martin


Sent from an iPhone, don't ask whose.

On Aug 27, 2012, at 8:08 PM, Richard Gerome onecoolka...@earthlink.net wrote:

There is probably only 2 things that could have caused this: 1st the CD 
 broke going in when the thing comes down to grab the disc by the hole because 
 of a miss alignment or 2nd It spun up to over 10,000rpm maybe it was 20,000

The OP stated there was a crack in the disc. The disc could have failed because 
of the crack and being spun up to high speed. 

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