Turns out this is the default switching for /COPY anyway according to. Which isn't a huge deal for me so using /COPY:DAT worked great. I was able to test more and the U flag on /COPY was the culprit here.

Robocopy Hell - Copy data without NTFS permissions My friend you helped me big time.

Migrating file servers - Robocopy syntax question Yes, /mir also deletes files and directories that have been deleted from the source. FastCopy is your perfect choice if you need good or better copy now If you don’t have copy for a nurture sequence, your home page or something else or if you have copy, but want to make it better get it from FastCopy.There are 32- and 64-bit versions, which run under Windows 7 and later, and Windows Server 2012 and later.

Oblivion mod managers edit load order by modifying dates on the files, and I'm not sure if dragging-and-dropping would keep that info. FastCopy computer software is a file and directory copier that runs under Microsoft Windows.It was originally open-source, under the GPLv3 license, but later freeware releases reported 'Due to various circumstances, distribution of the source code is temporarily suspended'.

Game data to new PC This would probably work well.

Is copying the best way to transfer large amounts of files? If you're copying a ton of files that vary in size, using a command prompt robocopy with the multi-thread parameter can make it so you are copying multiple files simultaneously and max out the bandwidth of whatever connection you're using (usb, SATA, ethernet, etc). You can keep it on your USB drive and use it on any Windows Computer.

Don't know about your merge needs, so take a look into it and do some tests before actually running it. Is ultracopier still the very best in terms of open source alternative file copying/merging tool ? I used robocopy on a slow network to transfer many gigabyte of data properly configured with retries and everything worked great.

Fastcopy home page