Where do deleted Photos App pictures go? Is there a Trash to be emptied? I can't find one.

Yes, the libraries are hard linked together so photos aren't duplicated. So only new photos will take up more space in either application once the migration is done. Deleting one that exist between the 2 libraries still leaves a copy in the other and the space will remain approximately the same.

If you have iPhoto in your purchases in the app store, move your current version to the trash. Then open the app store and go to purchases. You should be able to now download the current version of iPhoto.

Pictures deleted from Photos goes to the Recently Deleted album. They remain there for 30 days. Access it from the menu under File. You can go there and immediately delete them if you wish.

In addition, I would not get rid of the iPhoto library just yet if you intend to use Photos. I moved my iPhoto library to an external drive. I can still access it with iPhoto from there. Note that when you move it to an external drive, the links between the 2 libraries will be broken and if you try to put it back, it will then consume extra space. At some point when I'm completely satisfied with Photos, I will delete it from there as well as the iPhoto app.

Not all computers came with the latest version of iPhoto 11. I had to purchase the upgrade. If your computer came with the latest iPhoto 11, then you should have upgraded it to 9.6.1. If it isn't in your purchase history, then you are out of luck there.

You said it was in your application folder, but was greyed out. That means it hasn't been updated to 9.6.1 and won't work with Yosemite 10.10.3. There is no other way of obtaining it unless it is in your purchase history where you can redownload it. That's the only way to download it.

You do too have a copy (if you had one prior to upgrading and if you have not trashed it) - it is in your applications folder - for OS X 10.10.3 you must have version 9.6.1 - if you do not see - Can't Update iPhoto because it is not available in the App Store

LN

As long as you don't move it, the links still exist and it isn't taking up additional space. You can delete it if you want.

Always make sure you have a backup just in case something does go wrong.

Doug Chisholm wrote:

There must be some other way of breaking into my iPhoto library. It wouldn't likely help me that much if I could, but I'm now curious.

There is, but it would be time consuming & would require a lot of disk space just to do it in the most straightforward way possible. What you could do is restore your Mac to a pre 10.10.3 state from a Time Machine backup -- any one that predates the install of 10.10.3 should do. That will allow you to use your older version of iPhoto to open its library.

To preserve the current startup drive state & make it easy to return to it, it would be best to clone that to an external drive (or to a partition on the startup drive if you have enough free space on it for that). If you don't already own cloning software, you could use the free version of SuperDuper! for that. Once you are done using the older, pre 10.10.3 system, clone the clone back to your normal startup drive/partition. Alternately, you could use your last Time Machine backup to do that, but it is much slower than cloning.

While you are using the pre 10.10.3 system, you could do whatever is needed in the old version of iPhoto &, if you want to save anything you could export it to another drive or partition, to a USB stick, or whatever -- anything that won't be overwritten when you return your startup disk to its most recent state.

Because this is such a hassle, I suggest that you send Apple feedback, requesting that they provide some way for users who cannot update iPhoto to the required 9.6.1 version to access its library. Obviously, the most straightforward way to do that is to allow anybody running Yosemite to download & install 9.6.1, but perhaps they will come up with something else.

It is actually very simple once you know how. Find your PHOTOS LIBRARY in the PICTURES Folder, then hold down CTRL whilst clicking on it. That will open a menu, where you will see SHOW PACKAGE CONTENTS. Click on that and a new menu will open. In the MASTERS folder within that menu, all the original photographs, including those deleted, can be found organised by date.