If you are unable to access any of your Mac file then there is a possibility that there is something wrong with the permission settings so you have ro Repair Mac Permissions. The file and folder on the Mac has the permission setting that determines which user can access, read, write or move the files. So if the permission settings are changed or do not function well then you can not perform any operation in that file and sometimes on the whole Mac volume so to Repair Mac Permissions is necessary. You can use the disk utility to repair the permission settings which is successful in some cases but if it fails then you can reboot the Mac system in the safe mode and then change the permission settings by using the terminal. If you are unable to change the settings then the final option is to format the drive and re install the Mac OS X which will Repair Mac Permissions by making them default. Now you can get the lost data with the help of time Machine or by using Mac data recovery software which will certainly restore all your photos back in the Mac drive where you can access them easily. So now you know how easy it is to Repair Mac Permissions.