https://codesector.com/teracopy
Copying files in windows explorer has always been painful when shit goes wrong, so here's a better alternative. Has some useful extra features like verifying files and copying/moving files straight from the context menu but more importantly (for me at least) is being more reliable in general like proper support for pausing/resuming transfers.
But it doesn't always—I've been burned.
I use something called TeraCopy, on Windows, which replaces Windows' built-in copy/move dialog, and (among other things) re-reads everything afterwards to confirm that there were no write errors. Could never go back to just "crossing my fingers".
I'd really recommend TeraCopy. It's a file copy manager. It's great for copying large numbers of files because it keeps track of each one and doesn't cancel all of the copies just because one failed or already existed. After the copy is done, you can easily see which files (if any) failed and redo them with a single button press. It can also verify the copied files to make sure no errors were introduced in the process (rare, I know, but still nice).
The paid version has some additional features but the free one is plenty useful on it's own.
Official Site: https://codesector.com/teracopy
Use Teracopy for the file transfer. When asked whether you want to overwrite, Rename or Skip, select 'Skip All".
This will not copy the files already copied once again, neither will it try to duplicate them.
Are you trying to transfer large files? USB pendrive transfers do slow down sometimes when large files are being transferred. Also, try using Teracopy for copying instead of windows default.
From the TeraCopy program page: "TeraCopy uses dynamically adjusted buffers to reduce the seek times. Asynchronous copying speeds up the file transfer between two physical hard drives." I have personal experience with Teraopy - it really does make a huge difference in copying speeds, especially when the disk drives you are using are old and slow.
Yes, copy away. No difference. I would just verify contents after copied with some form of checksum.
Assuming Windows, use something like:
You should look into teracopy if you're absolutely married to windows for the task.... God windows built in copy method absolutely sucks . Or build a quick powershell copy script for the person.
https://codesector.com/teracopy
Powershell ideas https://gallery.technet.microsoft.com/scriptcenter/Synchronize-files-between-0bae996c
It's normal for a drive to fluctuate in write speeds. Nothing to worry about there. As for not being able to copy your file I would suggest trying Teracopy and see how that works out for you.
[Teracopy Download] https://codesector.com/teracopy
Use Tera Copy for file transfers, with the verify option turned on. It will in the end do a CRC check between the original and copied files and tell you which files did not copy over properly.
Why do you want to use Acronis for this backup? Simply use the Windows copy or better still Teracopy. Select the validate after copy option. This will check the CRC of all the files being copied and report if any file had a problem in being copied.
I've run into this issue before. Use TeraCopy to copy files. I had to copy a lot of files (totaling 250 GB) from an old computer to an old external USB 2.0 hard drive. Before using TeraCopy, it was averaging only 50KB/sec. TeraCopy boosted the copying speed to 1 MB/sec. If your computer has more modern hardware, your copy speeds should be much higher (depending on the disk drives' abilities).