Hi everyone. Hoping someone can give me a step by step process on how I can retrieve my files from a defective hard disk drive using a HDD enclosure and transfer these files over to an external hard drive I just bought. Just a background: Had my Mac Mini's hard drive replaced last Oct 2016 but it has again developed issues. When I say issues they are the following: 1. Takes a long time to boot up 2. Once it boots up and I select an app I would like to run it takes roughly a minute for it to open and any subsequent commands will take longer and sometimes won't respond at all. Brought this in back for a repair but the fees for creating a back up file is outrageous and the guy at one of the stores was helpful enough to suggest that since the HD Disk can still work might be good to explore using a HDD enclosure to try and access the files and transfer them. Have a working MacBook that I can use to do this but when I plug the old HDD file using the HDD enclosure it can't be mounted. Appreciate any help here.