Repair the former after the bad when Hitachi ARM series HDDs change head

      Hitachi ARM series HDDs have a common breakdown which is the former after the bad. This problem is usually the original head is breakdown and then changed a new head, after that it has the problem of the former after the bad. That is to say, the LBAs at the start of the drive are readable, but starting with a certain LBA, the drive is filled with UNC errors. This problem leads to the successful rate of data recovery reduced greatly after change head.

It's worth noting that Hitachi ARM HDDs have the former after the bad after change head, the root cause is the changed head’s fit parameters couldn’t match well with the original head’s fit parameters. That is to say, if the changed head could match well with the original one, it doesn’t have the problem of the former after the bad. But head is hard to find, it is hard to find the “perfect match” head, so the problem of the former after the bad is inevitable. In this situation, you can use MRT tools to repair the problem of the former after the bad, although you can’t find the perfect match head, change a common head can also copy data, it increases the successful rate of data recovery.

If you want to know how to deal with the problem of the former after the bad by MRT, please click the follow link to download video tutorials: http://vip.mrtlab.com/showdown.asp?id=10 

 
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