Is there a max number of file copy or moves allowed? (Copy over 1 million files stopped after 256 GB)

[ericw]

Hi, new user here, so maybe I have missed something:

I am trying to copy years of photos (over 1 million files) from thousands of folders onto another drive in order to remove duplicates, etc.

I set up the copy function that seemed to work, but then it stopped after 256 GB. I did this twice, same result each time.

Any advice?

Thanks in advance.

[petermad]

Maybe your computer went into sleep or hibernation mode - Change your power settings to avoid that.

[ericw]

Good suggestion, but I had already turned off both while plugged in.

[ghisler(Author)]

Did you get any kind of error? For example, the number of files in the root of a drive is limited. You can run into this problem when trying to backup many files to a USB stick. Solution: Create a subfolder and put them in there. Subfolders are in principle just files, so they can grow to accept more files if necessary.

[polle452]

You could have an issue with version of Operating System and/or of the File structure on your drive.

See this Microsoft table:
https://support.microsoft.com/en-us/help/140365/default-cluster-size-for-ntfs-fat-and-exfat

Also look for file size vs block size.
'Bad' USB stick with capacity less than advertised?

Here is an example:
https://www.dropbox.com/pri/get/Shared%20DBGPN/File%20sizes-Window.png?_subject_uid=271463792&w=AAAxb2YLuzHStu00A_F51bF6wns5AiQozmlVMyNjqRzrLg

This is Win10, TC9.51 and a 64GB SD card.