Hi Ronni, yes it has, dare I say too, been a stuff up! :) 
Please finish your more urgent work before responding to my woes.

I am aware that I am creating a new iPhoto Library but I am doing this
with cognisance that I am working in a completely separate place (with
copies only) of the library files on my wifes MBP. The master library
files still reside on her MBP and exactly as I left them in the User >
Pictures folder. I took copies only of those two library files.
What I have proved by making a new library is I can access the
content. That was my number 1 concern.
I understand the Hard Link information you've outlined.
Answers to your questions here below.
A). ON YOUR WIFE'S MBP  IN HER USER HOME FOLDER > PICTURES - THERE
ARE THESE TWO FILES "IPHOTO LIBRARY.MIGRATEDPHOTOLIBARY” and
 "PHOTOS LIBRARY.PHOTOSLIBRARY"… Is this correct? Yes, this is
correct.B). And your wife's MBP only has ONE iPhoto Library on her
system... is this correct? Yes, this is correct.C). And when you try
to open PHOTOS on her MBP it doesn’t open... is this correct - or
what happens? When I press Photos on the toolbar, the Photos
application opens up at the new user screen indicating the 4 options.
But no images appear when selected on the "Photos" tab. When "Albums"
tab is selected, the Events folders from iPhoto are shown greyed out
with no photographs within the folders. I did not select Use iCloud, I
never do.
Thanks
Pete.

----- Original Message -----
From: [email protected]
To:"WAMUG" 
Cc:
Sent:Mon, 27 Apr 2015 11:46:16 +0800
Subject:Re: iPhoto to Photos migration

 Oops I forgot to also mention -NOTE On first launch, PHOTOS asks
if you’d like to use ICLOUD PHOTO LIBRARY. I would recommend you
_DON’T USE ICLOUD PHOTO LIBRARY _at this time. 
  On 27 Apr 2015, at 11:39 am, Ronni Brown  wrote: 
 Oh Peter,
 I said I would get back to you when possible, I wish you had waited.
 I am busy with Clients work and really don’t have time at present
but reading your email I decided to reply to try to explain quickly
how the process works. 
 What you are now doing is Creating a NEW iPhoto Library (Duplicating
all the Media Files in iPhoto Library package)! You are not
understanding the iPhoto & Photos Directory structure... and how
‘Hard Links’ work so there is no duplication or extra space
required on the system 
 The Transition/Import from iPhoto to Photos has to be done on your
wife’s MBP where the Library files are in the correct locations to
link the two libraries using ‘Hard Links’.  
  HARD FACTS ABOUT HARD LINKS On import, Photos makes a HARD LINK to
all iPhoto media assets in its own library package, using the same
directory structure as iPhoto (The libraries say they’re roughly the
same size, but in fact, they’re sharing disk space via hard links).
Think of hard links as a cousin of Finder aliases—rather than
existing in one place with an alias in a different location, _FILES
THAT ARE_ '_HARD LINKED' APPEAR TO LIVE IN TWO PLACES AT ONCE, BUT
ONLY TAKE UP THE SPACE OF A SINGLE FILE._   __
 Your old library won't be converted, just imported, so you can still
open it in Aperture or iPhoto if you like (though once you import, if
you do anything new with that library in Aperture, it won't carry over
to the Photos version). 
 So what happens if you_ edit one of those files_? Something clever:
if I edit a file from a migrated iPhoto library in Photoshop, that
version is altered—but the version in the Photos library is
untouched.   _Basically, the act of modifying a hard-linked file
causes the link to break_. Now there are two different files, both
taking up disk space, living independently. For Mac users accustomed
to the a-file-is-a-file approach of the Finder, this one’s a bit of
a head-scratcher, but it’s a smart move by Apple to allow us to
MIGRATE TO PHOTOS WITHOUT DUPLICATING AN ENTIRE LIBRARY AND EATING ALL
OF OUR FREE DISK SPACE—or worse, never bothering to upgrade to
Photos because we don’t have the room. 
 The new Photos library references the same master images as your old
library, so you don't need the space to store images twice. It also
makes for an incredibly efficient migration process.  --- But because
of your initial (dare I say - stuffup) this hasn’t happened. How to
correct it?? I need more information - what is on your wife’s MBP. 
From what I can ascertain from your emails -  A). On your wife's
MBP  in her User Home Folder > Pictures - there are these two files
"IPHOTO LIBRARY.MIGRATEDPHOTOLIBARY” and  "PHOTOS
LIBRARY.PHOTOSLIBRARY"… Is this correct?  B). And your wife's MBP
only has ONE iPhoto Library on her system... is this correct? C). And
when you try to open PHOTOS on her MBP it doesn’t open... is this
correct - or what happens? 
 One suggestion I will make:   ON HER MBP - If she double-clicks on
the  "PHOTOS LIBRARY.PHOTOSLIBRARY" does it open in PHOTOS? If 
NOT   _Hold down the Option key as you open the PHOTOS app in the
Dock _to see the 'Choose Library dialog' window. Click '_OTHER
LIBRARY_'  Select the 'IPHOTO LIBRARY.MIGRATEDPHOTOLIBRARY' See if
that completes the ‘preparing for import’    
 Cheers, Ronni 

 On 27 Apr 2015, at 6:26 am, [email protected] [2] wrote: 
Thanks Ronni. I think I've cracked it.  I opened iPhoto with Option
held and selected "Create New". I set a new location for the new
database library file. Once that was set up, I then selected Import
and pointed to the "transitioning" iPhoto Library that I've been
unable to open up in the conventional way. So last night it was able
to commence the import of the photos and i can see the images on
screen as it counts down. The transitioning Library was ~250GB and I
had no choice but to let it proceed when it asked "confirm you have
enough disc space" - I had ~750GB free on my 2TB drive which at the
time seemed enough. Once it had started, it said "Importing 335,000
photos"!!! I don't recall there ever being that many, however, it was
still Importing this morning with 225,000 to go but only 250GB space
left. I think it will run out of space at that rate.Oh well, I am not
so worried about that, at least I have now got a way to access them. I
will get myself another 2TB drive and when I am home will start the
process again. I am somewhat puzzled though that it is now apparently
much larger than it was. Perhaps there is a compression that can be
done or maybe this is all a consequence of the process of how I've got
into this pickle.
 Maybe there is still another method to properly unpick the library
without resorting to an Import process. I am keen to hear if you or
anyone else has encountered this and methods for unpicking the mess
I've got myself into. 
 Regards 
 Pete. 

----- Original Message -----
 From: [email protected] [3]  
To:"[email protected] [4]" 
Cc: 
Sent:Sun, 26 Apr 2015 17:53:44 +0800
Subject:Re: iPhoto to Photos migration

Hi Peter, 
 I haven't got time tonight, but I will get back to your problem when
possible.  
Cheers, Ronni  
Sent from Ronni's iPad4 

On 26 Apr 2015, at 4:20 pm, [email protected] [6] wrote:

 Hi Ronni, yes I feel a real goose for the steps I took (in
hindsight). 
 As I work away (and am away from home for a further 2 odd weeks), I
placed a copy of both (iPhoto and Photos) library files onto my 2TB
external drive and using my Retina MBP to try and unpick this mess
remotely from my Wifes MBP. A necessity as this happened the day prior
to my departure.  
 So i have the two files "iPhoto Library" and "Photos Library" both
sitting within one folder on the external drive (each file is saying
around 295GB from Get Info but not identical sizes). They are also
still in place in the User>Photos folder on my Wife's MBP as I
restored the iPhoto library from Trash using the "Put Back" command. 
 When I attempt to open the iPhoto library (using the Option key
method on my Retina), it reflects as IPHOTO
LIBRARY.MIGRATEDPHOTOLIBRARY Which would suggest that the library
underwent the start of its transformation in readiness to be 'hard
linked' with the Photos library. But the transformation was never
completed. 
 I do not have a backup I can revert to at any stage prior to the
update - coz I blew away the Sparesebundle! 
 Pete.

----- Original Message -----
 From: [email protected] [7]  
To:"WAMUG" 
Cc: 
Sent:Sun, 26 Apr 2015 15:38:45 +0800
Subject:Re: iPhoto to Photos migration

 Hello Peter,
 Sounds like you have really messed up the transition/import of
 iPhoto Library to Photos... and then did a Time Machine backup
BEFORE testing everything was working correctly.... 
  The first time you launch Photos, it searches your system for iPhoto
and Aperture libraries. If only one library fits the bill, it imports
that library. Otherwise, it opens the Choose Library dialog window
 - Choose a library from the list, and Photos prepares the library
for import.  
 Photos needs to prepare your iPhoto Library before it imports into a
new Photos library. When you import an iPhoto library into Photos,
your existing library remains intact. The net result of the import is
that you’ll have two separate libraries on your Mac’s drive: your
old_ iPhoto library_ and a new _Photos library_  
  The Import does NOT duplicate iPhoto Library but uses “Hard
Links". Your iPhoto Library remains intact, BUT a new Photos Library
comes into being.  The Libraries say they’re roughly the same size,
but in fact, they’re 'sharing disk space' via ‘hard links’. 
 After the successful transition ‘Migration' from iPhoto to Photos
you will have in your User > Pictures folder - 2 separate Libraries:
 "IPHOTO LIBRARY.MIGRATEDPHOTOLIBRARY” AND “PHOTOS
LIBRARY.PHOTOSLIBRARY"  
  On 25 Apr 2015, at 9:30 am, [email protected] [9] wrote: 
Last week I updated my wife's 2012 MBP to latest OSX which brought the
new Photos application. I had done my own 2014 Retina MBP previously
without issue and have all my images carried over into Photos without
a hitch
 The issue with my Wife's machine is I did the update and am unable to
see the images in Photos. I just get the intro screen with the 4
options for a new user. I've done the "Option" whilst starting it up
and directed it to the new Photo Library file and still nothing. The
Photo Library file shows in Get Info of 295GB so it would appear to be
a file containing the picture and video files but how do I access it? 
 An issue potentially caused by me was that after the update,  I ran
a cleaner (Cleanmymac) and it did some cleaning. I did in my travels
after the cleaning notice in the Trash can was the old iPhoto
Library!!! I assume this was an action of cleanmymac. So I selected
"Put Back" and it in turn is now placed alongside the Photos Library
in the default Apple folder location. 
 It was only after this that I opened Photos for the first time and I
suspect that upon first opening, it runs a script which does the
migration (but not duplication) of image files.   
Oh goodness... Yes, that is correct. The first time Photos is opened
(as I’ve mentioned above) the transition (Import from iPhoto) is
run. But you are saying your wife’s iPhoto Library was not in the
correct location in Pictures... but was sitting in the Trash!

 It gets worse - much worse I am afraid.  
I don’t want to read anymore :(

 During the update I turned Time Machine off to prevent unwanted
backups during the process of updating. I think this is a recommended
practice anyway. Well, after the dust settled (but before running
Photos) I turned TM back on and it goes through the Preparing Backup
routine for a looong while and then says Backing Up 325GB!!! I pressed
the cross to stop that and thought about it a bit. Running low on TM
disc space and having done this previously (and never once having had
to call upon the TM backup to retrieve anything in the 6 years of Mac
ownership) decided I would delete the Sparesebundle file and do a new
Backup from scratch . I suspect that the Preparing Backup routine
spotted the iPhoto Library in the Trash and the Photos library in its
normal home and detected there are two libraries to back up hence the
order of magnitude of the backup. 
 Anyway, now that I am over this, I still have the problem where
neither iPhoto nor Photos will open showing my wifes previous
images.  
 When I launch iPhoto - I get a message "Aperture needs updating" so
when I try that, it says the version of Aperture required is not
available in the Australian Apple Store - so no good there 
 When I launch Photos - I get the first time user screen. If I select
Albums, I see the greyed image of the previous Events folders as
Albums and the names of Albums are accurate per the previous iPhotos
Events folder, but upon opening, nothing is visible. Still no images. 
 Whilst in hindsight some of my actions have been not very good, I
still don't understand why I can get at my images/videos?  
Whilst in hindsight now ‘some’ but almost all your actions have
not been good from what I can ascertain from your email :(

 Anyone have any ideas how to get out of this pickle?  
Let us now exactly what Library files you have in User > Pictures
please -  and also if you have a backup of your wife’s iPhoto
Library BEFORE you did the Update to OS X 10.10.3? 
 Cheers,
Ronni

17" MacBook Pro 2.3GHz Intel Quad-Core i7 
2.3GHz / 16GB / 1TB 840 EVO SSD

OS X Yosemite 10.10.3

 Pete :(
               

Links:
------
[1] mailto:[email protected]
[2] mailto:[email protected]
[3] mailto:[email protected]
[4] mailto:[email protected]
[5] mailto:[email protected]
[6] mailto:[email protected]
[7] mailto:[email protected]
[8] mailto:[email protected]
[9] mailto:[email protected]

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