I just downloaded Eraser - When installing it, I selected the Complete option but it wouldn't install and backed out everything - I then ran it again with Typical and it installed fine - I'm trying to test it by running it on a partition I set up for test stuff - It is fully shared and I have an admin account so I set the security permissions and owner to allow me full access (in W7 HP) - the error I continue to get is the program (Eraser) doesn't have permission (I'm trying to tell it to Erase the unused disk space) to access this partition and to run as administrator - So I right clicked the Eraser shortcut, clicked 'Run as administrator' clicked the UAC to allow the program to run as administrator and set up the task as manual, unused disk space, select the test partition, then ok - the settings are all default values - I can access this partition from my other computers on my home network and both read and write to it, delete files, etc - (I can do the same from this computer) - I can't imagine why Eraser should have a problem with the unused space as there's about 10gb unused - I did try it on my Recycle Bin and worked fine - any help appreciated - John Version 6.0.10.2620