Lost files - due to soft reset?

Lots of files on my LD have vanished (or maybe only partly so). I'm not sure exactly when it happened, but the LD did what I think is a soft reset this evening, mid-use. Sometime later, going in D2G and Files, lots was missing. In fact, I think they were empty, but my memory may be at fault by now. I did a soft reset and some files appeared. In Files, there a just a few recognisable files listed under LIFEDRIVE. Before this happened, Files had two different places where files were stored. Was the other the one with the blue card symbol? Or is that only seen in D2G? Under LIFEDRIVE, as well as the few recognisable documents, I now have a CHDSK.TXT file telling me >>FAT filesystem check detected problems that were fixed: has entried after end of directory repair action: extending directory<< Then lots of messages about lost clusters. Also in LIFEDRIVE are lots of files that have numbers for names, an icon like a piece of paper with turned down top right corner - and they won't open. I wonder if these are the missing files and how do I get them back? And get back the usual division into the two different sections. (Are they LD and hard drive?) At some point I tried HotSynch, hoping they'd come back. No joy. Had an error message >>