Daisy Chain Firewire iPod

2008-09-22 Thread Simon Royal

Hi

I have recently swapped most of my external USB drives for Firewire ones, 
as I only ever had my iPod plugged in via firewire, leaving a spare 
firewire port, meanwhile my USB ports and hubs were brimming.

So I hooked up my iPod through my external firewire DVD writer. Great! 
apart from one oddity.

Sit the iPod on the dock and it powers up and charges but wouldn't mount. 
So I switched on the firewire DVD writer and lo and behold the iPod showed 
it's 'do not disconnect' and then mounted and iTunes kicked into life.

So what would happen if I turned off my DVD writer while the iPod was 
mounted? Would it disconnect the iPod too. Just a bit confused as to why it 
would power the iPod even if the DVD writer is off but only mount if it is 
on.

Seems daisy chaining has its drawbacks.

Simon

--- http://www.simonroyal.co.uk - Mac news, reviews, guides, upgrades, 
hacks and more... - http://www.nmug.org.uk - webmaster for Norwich Mac User 
Group - The box said requires Windows XP or better, so I bought an Apple 
Mac.



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Re: Daisy Chain Firewire iPod

2008-09-22 Thread Charles Davis


On Sep 22, 2008, at 5:17 PM, Simon Royal wrote:


 Hi

 I have recently swapped most of my external USB drives for Firewire  
 ones,
 as I only ever had my iPod plugged in via firewire, leaving a spare
 firewire port, meanwhile my USB ports and hubs were brimming.

 So I hooked up my iPod through my external firewire DVD writer. Great!
 apart from one oddity.

 Sit the iPod on the dock and it powers up and charges but wouldn't  
 mount.
 So I switched on the firewire DVD writer

???  I gather that the DVD unit has an external (I.E. Wall Wart)  
power supply.
Just how are you 'switching on' the DVD unit? Is there a switch on  
the DVD?

 and lo and behold the iPod showed
 it's 'do not disconnect' and then mounted and iTunes kicked into life.

 So what would happen if I turned off my DVD writer while the iPod was
 mounted? Would it disconnect the iPod too.

That would be my expectation given your description so far.

 Just a bit confused as to why it
 would power the iPod even if the DVD writer is off but only mount  
 if it is
 on.

 Seems daisy chaining has its drawbacks.

Another example of deficient documentation, requiring the User (you)  
to 'learn by experimentation'.  ;-)
Fortunately, I haven't yet run into any questionable problems using  
FireWire.

Chuck D.

 Simon

 --- http://www.simonroyal.co.uk - Mac news, reviews, guides, upgrades,
 hacks and more... - http://www.nmug.org.uk - webmaster for Norwich  
 Mac User
 Group - The box said requires Windows XP or better, so I bought an  
 Apple
 Mac.



 


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Re: Daisy Chain Firewire iPod

2008-09-22 Thread Simon Royal

Chuck

Yes it is actually a Pioneer 112D in a 5.25 external firewire case with its 
own 'walled' power supply and on and off switch on the case.

With the iPod hooked up and the writer switched on at the wall and not the 
unit, the iPod will charge and not mount.

With the iPod hooked up and the writer on at wall and on at unit then the iPod 
will mount and work fine.

Simon

--- www.simonroyal.co.uk and www.nmug.org.uk (sent using Nokia E71)

-original message-
Subject: Re: Daisy Chain Firewire  iPod
From: Charles Davis [EMAIL PROTECTED]
Date: 23/09/2008 00:35



On Sep 22, 2008, at 5:17 PM, Simon Royal wrote:


 Hi

 I have recently swapped most of my external USB drives for Firewire  
 ones,
 as I only ever had my iPod plugged in via firewire, leaving a spare
 firewire port, meanwhile my USB ports and hubs were brimming.

 So I hooked up my iPod through my external firewire DVD writer. Great!
 apart from one oddity.

 Sit the iPod on the dock and it powers up and charges but wouldn't  
 mount.
 So I switched on the firewire DVD writer

???  I gather that the DVD unit has an external (I.E. Wall Wart)  
power supply.
Just how are you 'switching on' the DVD unit? Is there a switch on  
the DVD?

 and lo and behold the iPod showed
 it's 'do not disconnect' and then mounted and iTunes kicked into life.

 So what would happen if I turned off my DVD writer while the iPod was
 mounted? Would it disconnect the iPod too.

That would be my expectation given your description so far.

 Just a bit confused as to why it
 would power the iPod even if the DVD writer is off but only mount  
 if it is
 on.

 Seems daisy chaining has its drawbacks.

Another example of deficient documentation, requiring the User (you)  
to 'learn by experimentation'.  ;-)
Fortunately, I haven't yet run into any questionable problems using  
FireWire.

Chuck D.

 Simon

 --- http://www.simonroyal.co.uk - Mac news, reviews, guides, upgrades,
 hacks and more... - http://www.nmug.org.uk - webmaster for Norwich  
 Mac User
 Group - The box said requires Windows XP or better, so I bought an  
 Apple
 Mac.



 






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Re: Daisy Chain Firewire iPod

2008-09-22 Thread Charles Davis


On Sep 22, 2008, at 7:41 PM, Simon Royal wrote:


 Chuck

 Yes it is actually a Pioneer 112D in a 5.25 external firewire case  
 with its own 'walled' power supply and on and off switch on the case.

 With the iPod hooked up and the writer switched on at the wall and  
 not the unit, the iPod will charge and not mount.

 With the iPod hooked up and the writer on at wall and on at unit  
 then the iPod will mount and work fine.

 Simon

 --- www.simonroyal.co.uk and www.nmug.org.uk (sent using Nokia E71)

O.K   SWAG  [Scientific WildA** Guess], based on 35+ years of  
fiddling with Micro Computers.

The Wall wart being on, is powering the External case internal power  
connections, hence the power availability for the iPod.
The Case switch is turning on/off the DVD drive itself and the  
interface circuitry, hence the ability for the computer to then 'see'  
the iPod.

It may not be a correct guess, but it does fit what's been describe,  
and is thus useful for future planning, unless other quirks show up.

[Probably just what you have already concluded, but it is sometimes  
helpful to have a second opinion.]

Chuck D.

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