Step 3: erase disk or stop backing up to the previous disk. You can also click on the Options button to decide which data to backup.You can check Encrypt backups to secure your backup.Select the external disk you connected as the backup disk from the list.Click on the Select Backup Disk button (it's also named Select Disk in some systems).
Click Apple menu -> select System Preferences -> click Time Machine.Step 2: open Time Machine and select disk.
#Internal hard drive for macbook air how to#
Please read the following ways carefully to know how to backup Mac yourself (these ways work for how to backup MacBook to external hard drive, how to backup iMac to external hard drive, etc.). It’s easier to access an external drive: the external drive can be accessed from any devices while you can’t access the internal drive if your Mac is crashed/dead.