Can't copy files with a total of 100 GB from one external USB drive to another?

[Battousai01]

Hi guys, I am wondering why I can't copy files with a sum of approximately 100 GB from one USB drive to another external USB drive? I'm using Windows 10 and every time I try to copy the folder containing all those files with a total size of 100 GB it just do the usual "preparing/discovering files" and then it just disappears and doesn't copy anything.

I have to divide my copy to 20GB each until I complete everything.

Any idea why this happens?

Thank in advance for any replies.

 

[C1]

Various possibilities come to mind. Some are :
- An issue with the WIN10 installation
- USB hub going to sleep
- Some kind of file cache-ing issue

I would get to the bottom of it as this could be a show stopper when trying to do backups.

You'll need to try various tests to find out what's going on and there may even be a software monitoring & diagnostic tool available for this.

Hopefully someone will chime in about diagnosing this matter.

 

[Battousai01]

Hi guys, I have found the problem. The folder I am copying has a Windows User folder, it so happen I copied my Windows User folder on a previous installation of Windows as a backup into the drive I am copying from.

I tried to dig deeper and inspected each folder and I have found out that the "AppData" folder is somewhat locked as I can't even delete it. I don't know why, but my theory is that Windows 10 is probably referencing some file in that folder even though that folder has nothing to do with the current operating system.

 

[JimmiG]

Sounds like a permission issue. You should be able to take ownership of the folder and then change the permissions.