? tool in mac os x checks for bad clusters in the hard disk.

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Launch it and select your target hard drive disk to find data. Step 1. Download and install Recoverit hard drive recovery on your computer.

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You can also turn to the guide, Recover Data from Hard Drive with Bad Sectors, to get the full solution for recovering data from internal hard disk with bad sectors. If it is an internal hard disk, the steps are similar. You can follow the next steps to recover lost data from the external hard drive.

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If your hard drive with bad sectors is an external data storage device. Simple steps to recover data from the external hard drive in bad sectors