What do we ask first in many threads because we need it to be able help you?
OS and version?
Also, what did you mean with "reinstall the files"? The photos? Are you able to open the catalog you have been working with before the crash?
You description of the current issue is not clear, please elaborate ..
Sorry about not being complete.
I have OS Yosemite 10.10.3- LR version 5.7
When I bring up my catalog I have no pictures. I have all of my pictures as it seemed to back them up but they don't come up when I ask for the catalog. I'm not sure if I backed things up wrong or something else. If I can't find my LR data for each picture I would at least like to have them separated into the original folders, but when I imported them into LR they didn't separate into individual folders. Any help would be appreciated. I assume when you backup each catalog that all of the LR date is supposed to be there also