lightroom catelog

[#1]

While trying to clear out space on my macbook I deleted my old lightroom catelogs.

I saved the latest version but now everytime I open lightroom it's completely empty.

I've retreived my latest catelog and loaded new photos in.. saved the catelog again and then when I re-open it's still empty and I have to open my last saved catelog again. 

Did I delete something that was a necesity by accident? I can't keep saving whole catelogs to my computer everytime I use it! 

[#2]

While trying to clear out space on my macbook I deleted my old lightroom catelogs.

I saved the latest version but now everytime I open lightroom it's completely empty.

I've retreived my latest catelog and loaded new photos in.. saved the catelog again and then when I re-open it's still empty and I have to open my last saved catelog again. 

Did I delete something that was a necesity by accident? I can't keep saving whole catelogs to my computer everytime I use it! 

[#3]

Use your computers file browser to search for .LRCAT files, do others exist? Is LrC creating a new catalog each time you launch LrC? If another LRCAT file exist, what happens if you double click on that file?

[#4]

In LrC, Preferences, in the General tab, what do you have selected for Default Catalog?

[#5]

Ahhh I’ve never looked there before, but I did figure out I had to import
my catalog! All is good now, thanks for your help!