Chosen Solution
Hello! I was cleaning my Mac Mini and i removed temporarly the HDD of it. After i placed it back in i always booted into the recovery system. When i plug the HDD into my Windows PC and open a recovery tool all the Files are still there, but my Mac dosent accept the drive, why?
Opps! You may have altered the boot blocks when you connected the drive to your Windows system. Do you have access to another Mac? If you do you might find using it to either connect your Mac mini to using Target Disk Mode or use it to create a bootable drive so you can run Disk Utility to repair your drive. In this case you don’t want to use the recovery partition’s Disk Utility.