Moving folders to external drive problem
Mac OS 10.7.5
When I want to MOVE a folder from my HDD to an external USB disk I share with a PC I hold the CMD key, click on the folder which is on the iMac's internal HDD and drag and drop the folder onto the window of the external USB disk.
My problem is that unless I release the mouse keys after a very short time (maybe half a second), the MOVE changes into a COPY (the green plus sign appears on the icon and the files are copied and not moved).
How can avoid this or at least get this time to be longer ? My reflexes are not very good.
Thank you in advance.
iMac, Mac OS X (10.7.4)