Mac operating system has become most popular due to its efficiency and fast speet.Sometimes when you try to access external Mac hard drive (Lacie hard drive), and got some unwanted error message like :
“The disk is unreadable: Do you want to initialize it now?”
After this error message, when you try to fix the issue using Disk Utility, you might get the following messages:
Verify and Repair volume “disk1s3”
Checking Journaled HFS Plus volume.
Invalid node structure
Invalid B-tree node size
Invalid node structure
When we encounter with these error messages we come to the conclusion that there is something wrong with the data structures, library files and profiles of your hard drive. It could be either due to file system corruption or node structure corruption. As stated in the first error message, the drive is unusable until you initialize it.
The drive initialization is a three step process which wipes all the data stored on the hard drive. Its three steps are:
Disk Formatting
Disk Verification
Disk Zeroing
After initialization, you drive will be completely clean, without any data on it. It is the severest loss of your business critical data. Thus, you should never perform disk initialization in such cases. There could be several reasons behind this problem including file system corruption, iNode corruption, invalid file system or other data structure entries and so forth.
You need to simply format the drive and install fresh copy of troublesome data structures and other system files. But, like initialization, formatting also deletes data from your hard drive and may put you in need of Mac recovery.
Mac data recovery is possible with the application of third party data recovery Mac software. Mac data recovery software carry out the data recovery Mac operation by methodically scanning the entire hard drive and extracting all of the data from it. Mac recovery software do not change the actual data and thus perform original data recovery.
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