My MAC can't find the library

Hello,

I was simply trying to copy all my pictures from my C: drive to an external hard drive as backup but something went wrong.

I copied first 2 folders full of pictures that were on my desktop to the external  hard drive and I had no problem. then I went in to the picture folder and copied everything over the external hard drive. Now when I try to access the pictures in my local Mac I receive an error saying: Photos cannot find library " Photos Library.photoslibrary" This library was last found on a drive named "My Passport for MAC". Please attacehthat drive and click "Try again" if we attaché the external USB drive and click ok we can access the pictures.

But what went wrong? I didn't cut and paste the pictures to the external USB drive, I only copied them! infact the c: on my mac is still completely full. Why I can't not access to the picture anymore ? and how can I fix this issue ? do I need to copy the library back ? from the USB external hard drive to the Mac ? Can someone help me with this issue please providing step by step, I am not a MAC person.

Thank you
ItaliabellaAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

strungCommented:
See this Apple KB about designating the system photo library:  https://support.apple.com/en-ca/HT204414
ItaliabellaAuthor Commented:
hello and thank you for your important imput. I read the two article but I am not sure if I can reverse what I did. Basically how can I fic the fact that the laptop open up when I click photo library instead of telling me that it can not find the library and ask me to insert the Eternal USB drive ?

Thank you for your patience...
IT Pros Agree: AI and Machine Learning Key

We’d all like to think our company’s data is well protected, but when you ask IT professionals they admit the data probably is not as safe as it could be.

Eoin OSullivanConsultantCommented:
Italiabella .. please read this carefully

When you copied the contents of the Pictures folder to the external USB drive you copied a file called "Photos Library.photoslibrary" which is actually a folder which contains the entire Photos album.

The first thing to do is ensure that Photos is NOT running .. and if it is QUIT
Then look in the Pictures folder in the home folder on the hard drive of your Mac (what you call the C drive) - check that there is still a file called "Photos Library.photoslibrary" there also.
If the "Photos Library.photoslibrary" is still in the Pictures folder then you can simply make Photos use that one as default instead of the one you copied to the external USB ...
Just hold down the ALT key on the keyboard and then click the Photos icon to open that application.
A dialog will appear where you can click the Choose Library button and browse to locate the "Photos Library.photoslibrary" file on your HD and it will become the default album you open.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
David AndersTechnician Commented:
A completely full hard drive will generate an error message when the free space falls below 2 or 3 Gb.
Knowing the size of the hard drive and the free space available would help diagnose. Photos indicates you are running Yosemite OSX. iPhotos was the app on previous OSX versions.
Holding OPTION key down when starting Photos will allow you to choose the library to open, if you have deleted or overwritten an existing library, you can create a new one.
http://www.macworld.com/article/2880481/software-photography/how-to-prepare-your-iphoto-library-for-photos-for-os-x.html

Google "photos site:macworld.com" to see the articles about Photos on Macworld.

If your photographs are important you show have three copies - HD, external HD and internet is often recommended.  http://flickr.com  offers a free 1Tb storage space for photos
ItaliabellaAuthor Commented:
Einosullivan: thank you for your baby steps. I feel much more comfortable now in fixing this issue. I will let you know everybody if I am successful or not.
Eoin OSullivanConsultantCommented:
Also note the first point made by davidanders. If your HD is nearly full you might need to free some space and empty the trash.
ItaliabellaAuthor Commented:
everyone, following your precise instructions I was able to solve the problem. Thank you everyone.
excellent Job!
ItaliabellaAuthor Commented:
thank you everyone
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Mac OS X

From novice to tech pro — start learning today.