from the computer's internal hard disk to a secondary medium, such as a removable hard disk, external hard disk, CD-RW, DVD-RW or tape cartridge, should be done routinely, because the hard disk ...

All computers used to have an internal hard disk; however, today ... can be added internally if there is room in the case or an external drive can be plugged into a USB or eSATA port (see SATA).

Method 2. Recover external hard drives from a backup After losing data on an external hard drive, you should check all the backup disks in an effort to find and restore useful data from them. If ...