
Always choose the same disc to Time Machine in the future.

Once you selected the backup machine, the system will consider the disk as Time Machine.

Click on the Erase icon on the top menu bar.Connect SSD Drive to the Mac USB-C or USB port.For the time machine, you have to format the SSD from the default shipped format. Most of the SSDs come in default ExFat format that is compatible with both Windows and Mac. How to Format External SSD for Time Machine Let’s see how to format and prepare the SSD to use for your Mac Time Machine’s backup with OS X.
