It would be a major enhancement to be able to serialize file copy/move operations in the file copy dialog.

For example, when copying from several places on a single disk, by copying in parallel the head has to move from one to the other, making the overall copy happen much slower than if the copy had happened in series.

Also, sometimes it's necessary to move files off a disk to create room before copying new files onto the disk; currently the copy operation will fail with an out-of-room error if the move hasn't already occurred.

I suggest the following enhancement to the file copy-in-progress dialog:

1. Copy operations may be ordered by dragging them above or below other file operations (or alternatively an up/down arrow may be placed next to the operation on the right hand side to order the operations).

2. an icon button should appear next to consecutive operations in the copy-in-progress dialog. By pressing this icon button the operations are then linked, such that the first operation must be completed before the second operation starts.

Any number of operations may be simply serialised in this manner; it will make many copy operations go much faster and if the user doesn't wish to use it the functionality remains as it is currently.