External hard drives are extremely useful for backing up computers and for moving data between computers.
Unformat means to restore your partitions into the previous status or undo the results of formatting a hard drive. You can unformat your partitions by using unformat command in DOS environment.
1. Using FORMAT command to restore a hard drive
2. Using RECOVER command repartition a hard drive
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You should not partition the hard drive again;
You should not format the hard drive again;
You should not write data into the hard drive again;
Make sure the hard drive is not physically damaged.