Lightroom Catalog cannot update the location of my files

[DagB1]

Hello!

I am feeling a little desperate. I use an external hard drive for my lightroom catalogs and for storing the images from said catalogs. I regularly switch from my PC laptop to my iMac, depending on where I work. Now when I open the catalog with the PC (windows 8), shows that all the files are missing, but the folders are not missing (not ? marks at all). I tried "updating the location of the images", but it does not change anything at all. I need to be able to access to the latest changes I made on the catalog, but have no idea how to proceed.

Also, small point, when I try now to reconnect the external hard drive on the iMac where I was working just yesterday, it won't even mount the hard drive.

Can anyone help me? I have just had to cancel a client meeting because of this problem 😞

Thank you so much.

[Todd Shaner]

Can you see the files in Windows File Explorer on the PC? If so what happens if you try to open one of the files by double-clicking on it? What type of external drive are you using and have your tried a using different USB cable and a different USB port on your PC?

[DagB1]

Yes I can, and I can open them in Photoshop (they are RAW images). The external hard drive is a WD My Passport 4TB, which I formatted to Exfat. I have tried connecting with differet USB cables and ports indeed 😞

[GoldingD]

What format  is the external hard drive partitioned in?

[GoldingD]

Is your MAC OS Catalina?

[DagB1]

Hello! 

Thank you for your response!

My Mac is High Sierra and I am not sure if I partitionned the external hard drive, but I formatted it to exfat. 

The external hard drive is a WD My Passport 4TB. I have also tried connecting with differet USB cables and ports indeed, with no success. 

[Todd Shaner]

On the Windows 8 PC what drive letter is showing for the external drive in LR's 'Folders' panel? Is it the same as the drive letter when viewed with Windows File Explorer?