Restore Data from External Hard Disk on Mac

Mac OS is undoubtedly one of the popular operating systems around these days. However, Mac and Windows OS can be compared only the basis of popularity because; their functionalities are entirely different. But, there are certain devices like that of an external hard drive which need to be used in both the operating systems. The external hard drives are safe and reliable to store and transfer data from one computer to the other. They are also used to keep important data as a backup for the future usage. Still, there are certain circumstances under which the files from an external hard drive can be lost. Occurrence of such situations makes the user disgust and frustrated.

Consider a real life example where you are using a Western Digital external hard drive in your MacBook Air. You have kept some of your important files in the WD external HDD a long back. Now you need those files urgently. Therefore you connected the external hard disk to your MacBook and started copying the files from it. The moment you start copying the files from your external hard disk, your Mac computer was accidentally turned off because of sudden power failure. And much to your amazement, the external hard drive is unreadable the next time you connected it to your Mac computer!!! The files were not copied to the hard drive of your computer also!! Then you must be wondering how to retrieve those files from the external hard drive.

Don’t Worry!!! The lost files are still in the external hard drive. The external hard drive is unreadable due to corruption. The reason behind this corruption is accidental system shut down while the files were being transferred to the hard drive of your Mac computer. Anyway, you can easily retrieve the files from inaccessible external hard drive using Mac Disk Recovery Software. This software can easily restore data from corrupted external hard drive provided the data should not be overwritten. To avoid overwriting of lost data in the external hard disk, stop using it right after it is corrupted.

Other than power failure, there are some other reasons responsible for data loss from external hard disk on Mac OS. Some of them are mentioned below in details:

Virus Attack: The file system of the external hard disk can be severely affected due to virus attack. The external hard drive can be infected by virus by using it in different computers or a computer which is already affected by virus.  The entire external hard disk becomes inaccessible due to virus attack leading to severe data loss.

Accidental deletion: The files can be deleted accidentally by the user from the external hard disk. You might delete some important file off your external hard disk instead of deleting any unwanted files. As the files deleted from externally connected devices are not stored in the Recycle Bin folder after deletion, there is no chance to restore the deleted files on external hard disk.

Accidental Formatting: Formatting the external HDD accidentally also leads to severe data loss. Sometimes, due to device corruption you may get some format error message like “the disk is not formatted do you want to format it now?” If you select yes in this case, the external hard disk gets formatted removing all the important data from it.

Improper Usage: Improperly removing the external hard drive from your Mac computer leads to data loss from it.  Removing the external HDD abruptly or accidentally while the files in it are in use can even corrupt the file system of the external hard disk. As a result all the data store inside become inaccessible.

Mac disk recovery utility will definitely help you to restore data from external hard disk deleted / lost due to any of the above scenarios. It can restore formatted hard drive data on Mac. Other than formatting and corruption, the hard drive data on Mac OS X lion may be inaccessible due to bad sectors. Bad sectors mean damaged sectors on the hard drive which cannot be read by the read/write head.  Such sectors can be created due to overhead, excessive read/write operation or Overclocking of processer. In such cases, this software helps you in creating disk images so as to recover hard disk data on Mac Lion.

Other than this, hard drive crash is a common situations faced by the Mac users these days. The hard disk may crash due to either logical or mechanical failure. In case of mechanical failure you need to take the hard drive to data recovery lab. However, in logical failure of hard drive this software can retrieve data from crashed MacBook hard drive.

Simple steps to recover external hard drive data on Mac OS are:

Step-1: Connect the external hard drive to your Mac computer. Then, Download and install the demo version of Mac disk recovery software in the hard drive of Mac computer. Upon successful launching of the software select “Recover Volume / Drive” from the main screen. Then select either “Partition Recovery” or “Formatted / Reformatted Recovery” from the next screen according to the data loss scenario.

Mac Disk Recovery Software - Main Window

Step-2: After that select the external HDD as the drive from which the files are to be recovered and click on “Next” to start the scanning process. Once the scanning is completed, you can preview data retrieved from the external hard disk.

Partition Undelete - Preview Window

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