Transferred Catalogue only gets an Error message on opening...

[ByetheSea]

Hi Folks - hoping I can find a solution...I've gone through several posts...this seems a unique problem.

Situation: replacing my old iMac 2017 with a new iMac 24.

On old iMac I had photo library on a RAID system with catalogue on internal HD. I want to move catalogue to the external HD (RAID)...following online advice on how to do that. I tested LRC on my old iMac to endure it would open successfully on the old iMac, from the new catalogue file location (on same external HD system) - which it did successfully.

When I connect the external HD to new iMac I launched the catalogue file from the external HD and get this error message. So how do I change 'folder permissions'??? I did go into Sys Preferences and LRC is checked off to allow access under Security & Privacy.

As an aside, I know it's not ideal to have catalogue off of the internal HD but it can be done...I have to this point managed my catalogue of ~50, 000 images as one...

Any help much appreciated...hope I have provided enough detail.

Thanks in advance

 

[JohanElzenga]

Do the following. Select the icon of the external disk and choose 'Info' (Cmd-i). Look at the bottom of the dialog. Do you see a checkbox 'Ignore ownership of this volume'? Make sure it is checked. It's possible that you'll have to do this with the disk connected to the old computer.