Files size has changed on my PC !!!


  1. Posts : 7
    Win7 Enterprise 32bit
       #1

    Files size has changed on my PC !!!


    Hi

    I have many pictures on my PC ( about 20,000 jpg files ) that I have backed up to an external hard disk and also burned on DVD.
    I used beyond compare tool to compare the pictures that on my PC with the pictures that on the external drive and the DVD - all was identical.
    Few days ago I have compered it again and saw that the files size is not the same meaning both "size" and "size on disk" properties of the files on my PC is less ( in several KB ) then the files on hard disk and DVD.

    I use several SW like Picasa and Photoshop but only to view the pictures not edit them so I don't know what cause this change.

    Please help.
      My Computer


  2. Posts : 2,039
    Several, including Windows 7 x64 Ultimate
       #2

    Have you used any cleaning software, run a "Disk Cleanup", defragmented, or indeed anything like that?

    All these things can alter the file size on a live disk. Nothing can alter the file size on a DVD.

    Regards....Mike Connor
      My Computer


  3. Posts : 7
    Win7 Enterprise 32bit
    Thread Starter
       #3

    Mmmm. don't think so.
    I have ESET Smart Security 4, can it or any Microsoft regular Win7 software updates or indexing cause it ?
      My Computer


  4. Posts : 357
    Windows 7 Home Pre
       #4

    When you say several KB, are you talking MB GB or just KB.

    Also have you looked too see if the quantity's are the same.
      My Computer


  5. whs
    Posts : 26,210
    Vista, Windows7, Mint Mate, Zorin, Windows 8
       #5

    Several KB is nothing. A good picture has about 1MB, so unless you lost a bunch of MBs, I would suspect that all your pics are still there. I would not worry about it.
      My Computer


  6. Posts : 2,039
    Several, including Windows 7 x64 Ultimate
       #6

    felad said:
    Mmmm. don't think so.
    I have ESET Smart Security 4, can it or any Microsoft regular Win7 software updates or indexing cause it ?

    Lots of things can cause variations of a few kbytes on a live disk. Unless any of your files are missing, I would just forget about it.

    Regards....Mike Connor
      My Computer


  7. Posts : 7
    Win7 Enterprise 32bit
    Thread Starter
       #7

    The change is about few KB for each picture and there are no lost pictures but still I would expect that any change in the size will be in the "size on disk" and not real size.
      My Computer


  8. Posts : 2,039
    Several, including Windows 7 x64 Ultimate
       #8

    felad said:
    The change is about few KB for each picture and there are no lost pictures but still I would expect that any change in the size will be in the "size on disk" and not real size.

    Various file sizes displayed on live disks are notoriously inaccurate, for various reasons. Unless something is missing or damaged, then there is nothing to worry about.

    Regards....Mike Connor
      My Computer


  9. Posts : 5,642
    Windows 10 Pro (x64)
       #9

    It was probably just a change in the metadata for the images. Happens from time to time, nothing damaging to the images.
      My Computer


 

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