Windows 8 and 8.1 Forums


How can i verify integrity of copied files ? - mass verifi

  1. #1


    Posts : 6
    Windows 8.1

    How can i verify integrity of copied files ? - mass verifi


    Hello. I had a raid 1 - 2 TB system

    Now i am moving all data to another new raid 1 - 3 TB system

    I did build raid 1 - 3 TB system and copy pasted all files from previous system to the new system

    It did the job correctly however i am afraid of if any file is not copied correctly and it is corrupted

    How can i mass check new system has no corrupted file ?

    I mean comparison of entire hard drive to entire harddrive

    ty very much for answers

    windows 8.1

      My System SpecsSystem Spec

  2. #2


    Posts : 328
    Windows 8.1 (x64)


    You could also use a classic checksum file, they are designed specifically for this purpose. The most well known is md5. Several utilities exist, like md5deep (md5deep and hashdeep) that can verifiy the integrity of whole directories or drives for that matter.

    Next time though, you would be better served using a copy utility that already checks the integrity of the file after copying like TeraCopy (TeraCopy for Microsoft Windows - Code Sector) or SafeFileManager (Mindbytez Software - SFM v1.02 since November 5 2012)
      My System SpecsSystem Spec

  3. #3


    Posts : 6
    Windows 8.1


    Quote Originally Posted by oneeyed View Post
    You could also use a classic checksum file, they are designed specifically for this purpose. The most well known is md5. Several utilities exist, like md5deep (md5deep and hashdeep) that can verifiy the integrity of whole directories or drives for that matter.

    Next time though, you would be better served using a copy utility that already checks the integrity of the file after copying like TeraCopy (TeraCopy for Microsoft Windows - Code Sector) or SafeFileManager (Mindbytez Software - SFM v1.02 since November 5 2012)
    i think i will go with my own custom coded md5 comparison

    do you think can md5 comparison fail under any circumstances ?
      My System SpecsSystem Spec

  4. #4


    Posts : 328
    Windows 8.1 (x64)


    Nah. MD5 is very reliable, at least for file integrity which is what interests you. It's not good enough for security purposes like protection against tampering (viruses and the like) or as digital signature where you will want something like SHA256 or better, but to only verify if file is corrupted or not, it's perfect... Fast and reliable. It's what most copy utilities use I think, and things like clone disk applications.

    If you can code, it's relatively easy to implement md5 in powershell scripts. Or even via .NET with higher languages, the APIs are very complete and well documented.

    I myself use SigCheck (Sigcheck) by SysInternals. It can not only calculate hashes (md5, sh1, sh256, etc...) but also check digital signatures, and even send the hashes directly online to VirusTotal to check against 40 anti-virus engines. It's a commandline utility so you can use it very easily in batch or powershell.
      My System SpecsSystem Spec

  5. #5


    Posts : 6
    Windows 8.1


    Quote Originally Posted by oneeyed View Post
    Nah. MD5 is very reliable, at least for file integrity which is what interests you. It's not good enough for security purposes like protection against tampering (viruses and the like) or as digital signature where you will want something like SHA256 or better, but to only verify if file is corrupted or not, it's perfect... Fast and reliable. It's what most copy utilities use I think, and things like clone disk applications.

    If you can code, it's relatively easy to implement md5 in powershell scripts. Or even via .NET with higher languages, the APIs are very complete and well documented.

    I myself use SigCheck (Sigcheck) by SysInternals. It can not only calculate hashes (md5, sh1, sh256, etc...) but also check digital signatures, and even send the hashes directly online to VirusTotal to check against 40 anti-virus engines. It's a commandline utility so you can use it very easily in batch or powershell.
    ty for answer

    i already coded in .net 4.5 c# wpf application
      My System SpecsSystem Spec

How can i verify integrity of copied files ? - mass verifi
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