Spoon2001 said:
Looking for freeware to do a byte-by-byte comparison of files on CD/DVD with
files on hard disk, to verify data on the CD/DVD.
Something like Windiff. Downloaded CheckCD but it seems like it might be a
bit of overkill?
Not clear exactly what you are looking for. Windiff is a file
comparison tool, which will show you the differences between files.
CheckCD is a checksum tool; it won't tell you where the differences
are, but will verify file copies.
If all you want to do is compare for a good copy, I use a md5 checksum
tool. MD5Summer
http://www.md5summer.org/ is a good one, though there
are zillions. If you want a command line program, fsum
http://www.slavasoft.com/fsum/ works well. These programs just
generate a file of checksums, then verify against that. They don't
create modified versions of themselves that you have to copy around to
different directories, like CheckCD seems to do.
One nice thing about a md5 (checksum) program is that you can generate
the file before you burn the CD/DVD, and copy it to the CD/DVD along
with the files. Then anytime in the future you can easily verify the
files on the CD/DVE.
Also, md5 checksums are standard. So you can create the file with one
md5 program, and verify it with a different one.
If you in fact want a file comparison tool, that will show you the
differences between files, why not use Windiff? Sounds like you are
familiar with it already. If it's not already on your PC, you can
download it various places on the net.
Other file comparison tools include these (all good):
ExamDiff
http://www.prestosoft.com/ps.asp?page=edp_examdiff
WinMerge
http://winmerge.sourceforge.net/
KDiff3
http://kdiff3.sourceforge.net/
AsciiDiff
http://www.homestead.com/adriancarter/Compare.html
Terry