Missing photo links - changing name of external Hard Drive location

Question

I have searched for the answer to this high and low without success if someone can help...
I have a large collection of photos that I store on an external firewire hard drive (too many to store on my macbook pro). My iphoto library is on my Mac and when importing photos to iphoto I did not import the files so the originals remain on the external hard drive and are therefore linked to in iphoto.
I did it this way, rather than storing the library database on the external drive, so that I could access the information and thumbnails when travelling and not connected to my external drive.
I've upgraded my external hard drive and it will have a different name. I need to transfer all the photos across to the new hard drive.
Is there a quick way to reconnect all my original photos when transferred to the new hard drive or a better way to transfer them? Having tried to copy them across manually, obviously as expected I get a missing photo exclamation mark and am asked to browse to the file to relink. This is OK to reconnect one or two photos, but would take me forever with 17,000.
I remember Adobe Photo Album had a command reconnect missing files, and it would go off and search for the files you may have moved location (or changed the directory name in which they were held). Is such a function available in iphoto? I've tried the iphoto re-build functions, but this doesn't look in other attached volumes for the photos.
Alternatively, is there a way to edit the iphoto library database to do a search and replace of the Volume name to the new name and reconnect the link to then photos? e.g. Can you manually edit the albumdata.xml file (and would this be the file to edit) for example, and rebuild the database with Photo Library Manager?
Can you re-import all the photos from the new location, and rebuild the links that way, or does this create duplicate entries and not merge album, keyword event data etc for each photo?
My last resort is re-importing all the photos again, but of course I'd loose all my keywords, albums, events and other info I've spent a long time entering into iphoto.
Thanks
Phil

Answer 1

I just wanted to close this off to say that my solution worked fine and my iphoto libraries are up and running in perfect order again. And to summarise the solution so you don't have to read the entire post above.
This solution is for those wanting to have the iphoto library on your Mac and store the original photos linked elsewhere on an external / network drive (i.e. not imported into the iphoto library). Then you want to change the location where the originals are stored (say for example you get a new bigger external Hard Drive - like I did), and that new location will have a different name. Most people recommend importing the photos into the iphoto library, keeping everything together, and this can then be moved anywhere and accessed.
So to summarise, if you are moving original photos linked into iphoto:
1. Back up everything you can first...
2. First try moving the files (not copying and deleting) - the aliases may reconnect, especially if they are on your main HD. You may need to manually reconnect one file in each sub-directory.
3. Move your photos to your external HD / network drive. Note if the new place has the same name as your old external HD then the aliases probably won't need to be fixed.
4. Download and install File Buddy or similar Alias 'fixer'
5. Go to your iphoto Library, right click, "Show Package Contents"
6. Copy the "Originals" directory to another location so that file buddy can read it.
7. Run File buddy, fixing the aliases in your copy of the Originals folder, pointing to where you've moved your photos too (restrict the directories as much as possible where you point file buddy to search for the missing files to speed it up). You will only have issues if you have multiple copies of the same file - i.e. that have the same file name and creation date, and file buddy will give you a list of these. This in itself is a good check to see you don't have the same file in two places - I only had issues with folders of photos that I'd been given from family in which there were multiple copies of the same photo. I've now cleaned these up, saved space and ran file buddy again to finish the job off.
8. Finally, move this now fixed "Originals" folder back into your iphoto library (package contents) - writing over / replacing the original "Originals" directory.
All being well, should be fixed!
Just to share with you the benefits I find of having my photos stored on an external HD and the iphoto library on my Macbook:
-- Saves space on my limited internal HD
-- others can access the photos, set up and manage their own iphoto libraries pointing at the same originals, and we don't need two copies of the original files
-- I can access the iphoto library and manage albums, add keywords, titles, etc when not connected to the External HD, though you're limited to viewing the (not too small) thumbnail pictures iphoto stores in its library
I'm loving iphoto even more now, it makes managing and viewing my 1000's of photos a pleasure.
Cheers
Phil