I backed up my (heavily scratched) Halo 2 disk (yes, I legally own it) to my hard drive but I am getting "dirty disk" errors when I play campaign. I think one (or more) of my files are bad. Does anyone have a list of the correct CRC checksums for the (unmodified) Halo 2 files. Thanks.

Here's a great free command-line checksum/hash utility I found: http://www.slavasoft.com/fsum/index.htm

Thanks.