The S.M.A.R.T. reported that my hard disk is on the verge of failing. I want to replace it with another hard disk. However, the following problems cause me unable to do so. I tried to run Carbon Copy app to clone the hard disk, it prompted me to enter a password like "Type your password to allow this". However, it doesn't work. In my investigation, I realized that it doesn't work for any of my apps that requires installation or modifications. I set my admin password to nothing and it stil didn't work. No response at all of any kind. I believe it has to do with the hard disk and so I run Disk Utility and try to repair the hard disk. The app said that it is repaired but the problem remains. I tried to repair the permission settings and I think the problem came. Disk utility discovered many files and directories that have wrong permission and it tried to fix it. It reported to me that it is fixed. However, when I click the button "Repair Disk Permission" again the same list of files and directories are reported to have wrong permissions! Apparently, it is not fixing it. So I tried to load my Macbook Pro using installation disk and run Disk Utlitiy, thinking that it will be "cleaner" repair. And it seems to be so. The initial list of files and directories are repaired but there is a list that is not repaired at all. Here's the current list of that is "repaired": Do you have any solutions? I think if I get this disk permissions repaired, I think I can run Carbon Copy app.