Microsoft Windows 2019 server
The new hard disk is empty, but file manager still show it contain some files. When you go to the drive it is empty in file manager.
File manager show that only a part of the disk is free space.
Some person have moved files to the recycle bin. The recycle bin is empty for you, but the other user on the windows server have a not empty recycle bin – he should empty the recycle bin, then the hard drive will show 100% free space.
Files are not removed from windows until the recycle bin is empty, so if you try to clean a hard disk, you need to empty the recycle bin also when you are done deleting files.