Are you unable to copy from mac to hard disk ?Mac systems are used for many purposes like creating documents, editing pictures and movies, mixing music and many other. There can be many files in the Mac drive that you want to transfer to another system but you are unable to copy from mac to hard disk. You might be really frustrated and want to fix it as soon as possible. There can be any permission issue so you have to reset all the settings and change it to default. another option is of using the password manager in the terminal that can reset permissions. You can also use the disk utility to check for any corruption issue, it is able to fix some minor errors but if it is not working then you have to format the hard drive and then re install the Mac OS X to solve unable to copy from mac to hard disk issue. All the data will be now erased but don't worry as you can get them back by using the Mac data recovery software. This will scan the Mac drive and then restore the data back in it. Now you can transfer the files easily from Mac to hard disk. Download the wonderful software and get back Mac data.