Hi David,

Sounds like iPhoto has lost the path to where your iPhoto Library is located.
You need to 'reconnect' link iPhoto to your iPhoto Library on the external disk.
Make sure the external disk is connected to your Mac and has mounted on your 
desktop

Then Double-Click on the iPhoto icon in the Dock WHILE HOLDING DOWN the OPTION 
key.
Keep holding down the OPTION key until you see a Window which will show you all 
iPhoto Libraries.
When you highlight each Library it will show the path of that library.
Select the iPhoto Library that is on your external disk, (the 189.97 GB iPhoto 
Library)
Click Choose.

The iPhoto Library on the external disk should still be iPhoto Library (default)

Cheers,
Ronni

Sent from Ronni's iPad4

On 06/08/2013, at 3:11 PM, David Nicholas <david...@iinet.net.au> wrote:

> Hello all
> 
> I have had a strange problem today.  When I opened iPhoto I had a message 
> that my Library needed to be repaired.  Of course I accepted that and it went 
> ahead.  But then I got a very disturbing message - Something like  Can't find 
> the disk so can't save the Library.  To the best of my knowledge I hadn't 
> made any changes since I last opened it two days before.
> 
> Using my first line of defence, I rebooted.  Now I had a friendly display 
> saying that to start using iPhoto I should put some photos in it.
> 
> My iTunes, iPhoto and iMovie are stored on a separate Data disk as set up by 
> Daniel.  According to Finder, I have 189.97 GB in the IPhoto Library sitting 
> there which was most recently modified when I recently rebooted the machine.  
> So it still exists, but whatever happened this morning has cut me off from 
> it.  
> 
> I have looked at various forums but can't see any solutions to my particular 
> problem.  iTunes and iMovie are working quite normally.  Can anybody help me 
> to reconnect iPhoto to its Library?
> 
> David Nicholas
> 
> iMac OS X  10.8.4
> 2 GHz Intel Core i7
> 8GB 1600 MHz DDR3
> 
> iPhoto 11  9.4.3
> iTunes 11.04
> iMovie 11  9.0.9
> 
> David Nicholas
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