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  1.    22 Oct 2016 #41
    Join Date : Sep 2016
    Posts : 374
    Windows 10
    Thread Starter

    Quote Originally Posted by NavyLCDR View Post
    Thanks, but I don't want to use a 3rd party app because I'd be giving it access to all of my files...
      My ComputerSystem Spec
  2.    22 Oct 2016 #42
    Join Date : Jul 2015
    Posts : 9,149
    Windows 10 Pro

    Quote Originally Posted by NiceAndShy View Post
    Thanks, but I don't want to use a 3rd party app because I'd be giving it access to all of my files...
    You already are using a third party app that has access to all your files. The third party is Microsoft, and their app is called Windows.
      My ComputerSystem Spec
  3.    22 Oct 2016 #43
    Join Date : Sep 2016
    Posts : 374
    Windows 10
    Thread Starter

    Quote Originally Posted by NavyLCDR View Post
    You already are using a third party app that has access to all your files. The third party is Microsoft, and their app is called Windows.
    Thanks, but I'd rather just use an app that was made by Microsoft.
      My ComputerSystem Spec
  4.    22 Oct 2016 #44
    Join Date : Sep 2016
    Posts : 374
    Windows 10
    Thread Starter

    Quote Originally Posted by Bree View Post
    That's a relief!

    If you use File Explorer to copy and paste all files/folders from one disk to the other for any duplicate folder names you'll be asked:

    Attachment 107190

    If you tick 'Do this for all current item' and click Yes the folders will be merged. If duplicate file names are found you'll see:

    Attachment 107191

    Click 'Let me decide for each file' to get:

    Attachment 107192

    Now un-tick 'Skip...' at the bottom and tick both the 'Files from... ' and 'Files already in...' boxes at the top. A number will be added to any duplicate files you want to paste. If a file called image.jpg already exist the file of the same name you are trying to paste there will be renamed as image (2).jpg

    NB: for a large amount of data this can take a very long time discovering all the files to copy and calculating the estimated time to complete. You may want to do the copying in smaller manageable chunks.
    Wow, I really appreciate you for making this post for me!

    This is the best way for me to "combine" or "merge" the two USB HDD's right? Would you recommend a 3rd party app? I'd only install a 3rd party app if it made this process much more reliable or much faster...
      My ComputerSystem Spec
  5.    23 Oct 2016 #45
    Join Date : Aug 2016
    S/E England
    Posts : 4,182
    10 Home x64 (1709) (10 Pro on 2nd pc)

    Quote Originally Posted by NiceAndShy View Post
    This is the best way for me to "combine" or "merge" the two USB HDD's right? Would you recommend a 3rd party app? I'd only install a 3rd party app if it made this process much more reliable or much faster...
    This is the best Microsoft way to do this, but it has limitations. Say there two identical files (same name, same contents, in same folder) then you will end up with two copies on the one drive, the second one having ' (2)' appended to its name.

    3rd party apps may have more intelligence and be able to spot (and not copy) such files, only copying ones with the same name but different contents. I don't have experience of any such app, but others may be able to advise.
      My ComputersSystem Spec
  6.    23 Oct 2016 #46
    Join Date : Sep 2016
    Posts : 374
    Windows 10
    Thread Starter

    Quote Originally Posted by Bree View Post
    This is the best Microsoft way to do this, but it has limitations. Say there two identical files (same name, same contents, in same folder) then you will end up with two copies on the one drive, the second one having ' (2)' appended to its name.

    3rd party apps may have more intelligence and be able to spot (and not copy) such files, only copying ones with the same name but different contents. I don't have experience of any such app, but others may be able to advise.
    I see! If I used your method that's built into Windows, would I need to go through each individual folder manually because this will take me a long time...

    Thanks!
      My ComputerSystem Spec
  7.    23 Oct 2016 #47
    Join Date : Aug 2016
    S/E England
    Posts : 4,182
    10 Home x64 (1709) (10 Pro on 2nd pc)

    If you copy all duplicate named files then some may be duplicates with identical name/date/content, some may be be the same name and content but different dates and others may be the same name but different content.

    If you let it skip files with the same name and date you should not the first type of duplicate above, but there's a small chance that two files may have the same name and date, but different content (so won't be copied) - your choice of which risk to take.
      My ComputersSystem Spec
  8.    25 Oct 2016 #48
    Join Date : Sep 2016
    Posts : 374
    Windows 10
    Thread Starter

    Quote Originally Posted by Bree View Post

    If you let it skip files with the same name and date you should not the first type of duplicate above, but there's a small chance that two files may have the same name and date, but different content (so won't be copied) - your choice of which risk to take.
    Thanks so much for your continued help!

    I'm not sure what you mean by "you should not the first type of duplicate above"?

    If you copy all duplicate named files then some may be duplicates with identical name/date/content, some may be be the same name and content but different dates and others may be the same name but different content.
    I was worried about this as well so I'm thinking of just going through each folder manually...
      My ComputerSystem Spec
  9.    25 Oct 2016 #49
    Join Date : Aug 2016
    S/E England
    Posts : 4,182
    10 Home x64 (1709) (10 Pro on 2nd pc)

    Quote Originally Posted by NiceAndShy View Post
    I'm not sure what you mean by "you should not the first type of duplicate above"?
    .
    Sorry, somehow the word 'get' got left out. Should have read...
    If you copy all duplicate named files then some may be duplicates with identical name/date/content, some may be the same name and content but different dates and others may be the same name but different content.

    If you let it skip files with the same name and date you should not get the first type of duplicate above, but there's a small chance that two files may have the same name and date, but different content (so won't be copied) - your choice of which risk to take.
      My ComputersSystem Spec
  10.    25 Oct 2016 #50
    Join Date : Aug 2016
    S/E England
    Posts : 4,182
    10 Home x64 (1709) (10 Pro on 2nd pc)

    Quote Originally Posted by NiceAndShy View Post
    I was worried about this as well so I'm thinking of just going through each folder manually...
    Or use 'copy-and-paste' then, when it shows the list of duplicates for you, check the contents manually to decide if you need to tick the box to keep one, the other or both.
      My ComputersSystem Spec

 
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