Open a new Finder window, position and resize it as desired and then immediately close it. That should set the window default size and position.
If the above does not correct the issue between restarts, try deleting the Finder preferences. You can do this by:
NOTE: any Finder preferences (Finder menu -> Preferences...) that were previously selected/unselected will need to be reset if the below procedure is used.
- opening a Finder window
- select the Go menu and hold down the option key
- select Library from the menu
- select Preferences folder
- delete 'com.apple.finder.plist'
Then repeat the instructions in the first paragraph.
I finally fixed this, although I am not sure how exactly.
I ran tech tool pro 6 a couple of times, and repaired permissions. Didn't help.
Then I deleted the finder pref.s as suggested by Martin Pace above. Didn't help.
Then I disconnected everything from the computer, including the power cord, for 30 seconds.
Then I restarted with only the power connected, to reset logic board and SMC.
Then I shut down, and restarted with just the keyboard attached, and zapped the Pram three times.
Then I shut down, reconnected everything, and restarted.
Now the finder pages open up full size.
Of course, I could have done this a bit more scientifically, but that's just me:-), so I don't really know what
Can't hurt to do everything, or at least it didn't this time.