Can't drag docs from desktop onto the HD icon.
I am no longer able to drag documents onto the hard drive. I get an error message: The item “xxxxxx” can’t be moved because “Macintosh HD” can’t be modified. Do I "authenticate" or run to the apple store. I've had this computer for 2 years; updated to 10.6.7 several months ago. Today the problem started. Please advise.
iMac G5, Mac OS X (10.4.10), 2 GHz PowerPC