Common difficulties with Time Machine
Apple's Time Machine program works with most directly attached hard disks. Sometimes, issues can come up that are easily solved. Select the option most appropriate to your situation.
Option 1:
Time Machine gives errors or warnings during backup. This is resolved by reformatting the drive by following a specific process.
Option 2:
Get help setting up Time Machine.
Option 3:
How to restore files from a Time Machine backup.
What is the situation you are facing?