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Hitachi DK223A-81 Data Recovery Details
Hitachi drives fail and the DK223A-81 is no exception to this.
   
Dead Hard Drive. I put in a spare power supply and it booted up (no monitor or keyboard, just heard it power on). I got the new power supply today, but when the computer boots up it does not detect the hard drive. I put the hard drive in another computer and it is not detected. When the machine powers on I can feel that the drive is not spinning up.
...G Millar Luton
Hitachi DeskStar hard drive's have an alarming reputation for serious mechanical failure - the most notorious is known as the "DeskStar Click of Death". The Click-of-Death is characterized by a regular scratching noise punctuated by a click sound from the drive. Click of Death problems are among the most onerous to recover data from and we strongly recommend that you speak to one of our recovery specialists as soon as you suspect that your drive may be about to fail. The most common cause of the failure is the drive's Giant Magneto Resistive read / write heads in relation to the data stored on the hard media. This causes internal contamination which leads to the 'Click of Death' sound. If you attempt to boot up from such drive you would normally receive the error messages "Primary Master Hard Disk Fail", "No operating system found", "S.M.A.R.T. Capable But Command Failed" or some other PC or Mac boot failure message. It's critical at this point to stop reading from drive and bring it to our professional data recovery lab for a free diagnostics.. Any further attempts to read from these areas would shorten the drive's life and may result in further unrecoverable data loss.
 We go a emachine from a client that we get the below error on during boot up. I used the vista dvd to run a repair. After the repair the computer boots to windows without any problems. Once you restart it the computer give you the ntoskrnl.exe eror. So, I put the vista dvd in and do another repair, the comptuer boots to windows and then once you restart the same thing comes up again. Have done this 4 times. I have also done a check disk. I have nothing seen anything like this. If you do not have this disk, contact your system administrator or computer manufacturer for assistance.
File : ntoskrnl.exe
Status : 0x0000098
Info : Windows failed to load because a required file is missing, or corrupt.
..P Scarlett, Middlesbrough, UK
If this is the case you can try to swap PCB from another Hitachi hard drive of the same model but the chances are close to zero for a data recovery. The donor board could "lock" itself causing a good working donor drive not to spin again. The problem is that logic board on modern hard drives are adapted to the head disk assembly it was manufactured with. In our data recovery lab we use specialised software and hardware to rebuild these adaptive parameters located in the hitachi hard drives NVRAM to make donor PCB fully compatible with failed drive.
As we have mentioned earlier the most common issue for Hitachi drives is a clicking or a knocking sound. The drive spins up and the head starts clicking from the start. Most often this a sign of bad heads on the hard drive and the drive needs a head assembly swap from a matching donor. Before doing any clean room work, it is very important to perform accurate diagnostics and eliminate a chance of possible firmware corruption that sometimes can also cause clicking on Hitachi hard drives. Hitachi laptop or ntebook drives, share some typical 2.5 inch HDD problems. One of the main issues is heads sticking to the disk platters surface. Heads are normally parked on the parking ramp outside the platters, but sometimes after a fall or abnormal termination they fail to return to their regular parking position and are left on the surface sticking to the platter surface. It is absolutely impossible to correctly release them without proper tools and experience. Don't attempt to open the drive by yourself - you could easily scratch the media and this will make all your data unrecoverable!
If you experience any of the symptoms described above with your Hitachi DK223A-81 please call us on 0207 112 1770. If you hear your Hitachi DK223A-81 hard drive making some other unusual noises please call us on 0207 112 1770.
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