Running two Lightroom Classic programs from computer and external SDD drive

[davidg51]

This may sound a bit crazy
I have a large lightroom catalog on my internal hdd drive in my tower. I also have a med catalog on an external sdd. Can I download and install a second Lighroom Classic program to my SSD catalog with out interfering with my catalog on my computer. Eventually I will move the second large catalog to the external SDD and merge the two catalogues. Want to make sure the SDD catalog is working good first.

[JohanElzenga]

Why would you want to install the Lightroom Classic program on the SSD? Lightroom Classic can work with a catalog on an external drive just fine in its normal installation. If you want to test another catalog, then just use 'File - Open Catalog'.