windows xp – Old hard drive from Win XP machine does not show the files I am looking for

I had an old XP machine. took out hard drive and kept it in safe place. Now I need to get my photos from this drive. I connected it to my WIn10 machine using USB-SATA cable, and no luck, cannot find them. I can see the folders and some files in them, but there are no files that I know must be there. The directory structure looks “funny”, all folders except for “Documents and Settings”, “WINDOWS” and “Program Files” have “*.temp” extension.
The drive capacity is 112 GB, in “Properties” in shows as 88GB taken, but when I go folder by folder I can only account for 10GB at the most. When trying to access this drive I tried to show hidden files
What should I do to recover my files?