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How to retrieve data from an external hard drive

Last response: in Mac Os X
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February 10, 2013 9:33:24 PM

Hello, how do I re install data onto my mac.....I removed it to an external hard drive.
February 12, 2013 3:08:24 PM

Did you create a time machine backup on the external hard drive?
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February 25, 2013 6:04:51 AM

So, you meant you deleted your data on computer and want to get your data back from external hard drive? If so, just open the drive to find your data there.
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February 25, 2013 6:22:56 AM

Is your external drive not mounting?
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March 7, 2013 6:46:31 AM

Hi, :) 

Try advance data recovery tool to recover data from your external hard drive on Mac machine. Few days back I tried this software to recovered data from my external HDD and successfully I was able to recover my crucial files back. If you want to know that how this software will work then just go through the below links:
Page link: http://www.advanced-data-recovery.com/mac.html
Download link: http://www.advanced-data-recovery.com/download/advanced...

All the best :hello: 
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March 11, 2014 9:57:51 PM

a hard-disk failure occurs when a hard disk drive malfunctions and the stored information cannot be accessed with a properly configured computer. A disk failure may occur in the course of normal operation, or due to an external factor such as exposure to fire or water or high magnetic waves, or suffering a sharp impact or environmental contamination, which can lead to a head crash.

Causes
The most notorious cause of hard-disk failure is a head crash, where the internal read-and-write head of the device touches a platter, or a magnetic data-storage surface. A head crash usually incurs severe data loss, and data recovery attempts may cause further damage if not done by a specialist with proper equipment. Hard-drive platters are coated with an extremely thin layer of non-electrostatic lubricant, so that the read-and-write head will simply glance off the surface of the platter should a collision occur. However, this head hovers mere nanometers from the platter’s surface which makes a collision an acknowledged risk. Another cause of failure is a faulty air filter. The air filters on today’s hard drives equalize the atmospheric pressure and moisture between the hard-drive enclosure and its outside environment. If the filter fails to capture a dust particle, the particle can land on the platter, causing a head crash if the head happens to sweep over it. After a hard-drive crash, each particle from the damaged platter and head media can cause a bad sector. These, in addition to platter damage, will quickly render a hard drive useless. A hard drive also includes controller electronics, which occasionally fail. In such cases, it may be possible to recover all data.
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March 12, 2014 9:36:47 AM

If you are going to reproduce material directly from Wikipedia it would be polite to at least give a credit to the source. Better still, just give a link to the page in question.

I'm not clear from the OP that there is a problem with the disk. We need some more details - how were the files transferred to the external disk and what exactly is the problem in just transferring them back?
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