Fixing "Finder wants to make changes" message
If the "Finder wants to make changes. Type your password to allow this." dialog appears when you attempt to move, rename, or delete files, it's likely incorrect permissions on your files have accidentally been set. More specifically, the Access Control Lists (ACLs) on the affected files causes the problem.
To correct the problem, you'll need to use the Terminal to remove the ACL from the problem file with the following command:
chmod -N filename
Mac OS X uses two types of permissions on files, file modes and Access Control Lists (ACLs). It's common for incorrect ACLs to be set on files, often when files are copied from old computers or external hard drives.
You can verify if incorrect ACLs are causing the Finder to display the "wants to make changes" dialog by first listing which ACLs are currently set on a file. Use the "ls" command with the "-le" flag, in Terminal:
MacBook-Pro:~ user$ ls -le example_file.txt -rwx--x--x@ 1 user staff 195070 Aug 1 2010 example_file.txt 0: group:everyone deny deleteThe last line tells us that the ACL number 0 is denying the ability to delete (which also affects renaming and moving) to everyone.
Newly created files in Mac OS X don't have any ACLs at all. These are only added accidentally and can be safely removed. You can use the "-N" flag of the "chmod" command to delete unwanted ACLs:
MacBook-Pro:~ user$ ls -le example_file.txt -rwx--x--x@ 1 user staff 195070 Aug 1 2010 example_file.txt 0: group:everyone deny delete MacBook-Pro:~ user$ chmod -N example_file.txt MacBook-Pro:~ user$ ls -le example_file.txt -rwx--x--x@ 1 user staff 195070 Aug 1 2010 example_file.txt MacBook-Pro:~ user$Notice the second time we list the ACLs, none appear. The ACL has now been removed and the Finder will no longer display the dialog box asking for a password.