I have OSX Maverick 10.9.5 installed on my iMac. Using CCC, I tried to copy my HDD to an external HDD, but it told me that it would not be bootable because my source drive (on the iMac) doesnt have the file, mach_kernal. How can I rectify this problem? Is it possible to download the OSX 10.9.5 again, and if so, would a re-install fix this problem? Thanks in advance.