I also can not move folders to another hard drive

you need to check the files permissions. either you will need to fix the permissions by using the Disk Utility or you will have to click on the folder in question. press on the keyboard Command + i ( information for folder) then on the bottom of the window there is the sharing & permissions section. if you want to be able to move, copy, delete and read from that folder you will need to set it here.
If the little lock in the bottom right corner is locked you must click on it to unlock it, then enter in the admin password. once you set the privileges for each person or persons, you should click on the sprocket with down arrow. And specify if this setup is for only that folder tier or apply the same setting to all inclosed files and folders inside that folder.
if you do not do that last step then you will have that same issue again.