MD5 HASH: FILENAME: 65d7c91bf60c4fc772442e6f3e8dc1ef HS_CD1_2013_DECEMBER12.iso ffe4c11d4a40c422da1ee935a885e54d HS_CD2_2013_DECEMBER12.iso 5472939ed39bd50fc9ef940242fa39f8 HS_PC_CD_2013_DECEMBER12.iso There are many MD5 hash checkers available on the web. Some are GUI based and others are command line driven. They are available for all Operating Systems. As long as it uses the MD5 algorithm, any program should work. Here is the link to an open-source Windows MD5 checking program: http://md5deep.sourceforge.net/ Once you have installed it, use the md5deep.exe to calculate the hash - example - md5deep.exe HS_PC_UNIX_2013_JULY25.iso You can then compare that string with the one provided above. Most programs like md5keep even allow you to check one or more MD5 hash strings from a file containing known hashes. Check out the MD5DEEP.txt file for more information.