Help my hard disk

Hi, there,

I have two 30G HDDs and a 320G HDD , and two of them have xp
installed. Yesterday, I start my computer with my 320G HDD and one 30G
HDD first, that was ok. But after I replace 320G HDD with my another
30G HDD, I got a problem. One of two disk partition got larger
capacity from about 10G to 100G, and all folders and files in that
partition are named very abnormally.

Please help me to restore that HDD.

THX!