The myopic view of people in Nigeria and other developing West Africa countries regarding information handling and projection has made it difficult for advanced data solution. A typical computer user or organization attitude towards loss of data or information is very discouraging to enable any company come up at all to invest in standard data solution technology using advanced data recovery tools like SalvationData tools.
On 22nd June, 2011, the technician from IT Departments of a ship-building company came to Mr. Gradley in a hurry and said, “I don’t know what’s going on. Today the server cannot start up”, as soon as Mr.
DreamWorks Picture’s new 3D film Kong Fu Panda2 has been on the hot show for a couple of days. Meanwhile Pirates of Caribbean4 released on the same period has swept through to contest with DreamWorks but failed to win the campaign on account of less shocking 3D effect than Kong Fu Panda2. 3D screen attracting people’s eyeballs by its rich and dynamic animations, Ipad emerging all of a sudden that changes the traditional way people look on computer, etc.
47: Missed data sync byte 48: Missed data sync after a split 49: Thermal asperity code 4A: Error didn’t repeat during dynamic sparing mini cert (usually refers to cases of log overflow) 4B: Error log full 4C: Controller stopped without a reason 4D: Error reassigned during dynamic sparing 4E: Block release timeout error 4F: Buffer ready error 50: Slipped sector (P-List) 51: Alternated sector (G-List) 52: Pad and fill defects 53: Hard error w/AT retries no error with full retries (instability) 54: Error during scratchfill 55: Bad alt dest ID info (all messages refer to Niwot addressing whenever alternative destination is mentioned) 56: Unable to find valid alt dest 57: Unable to delete alt dest 58: Too many defects per head 59: Too many defects per track 5A: Too many dynamic slips 5C: Unknown full slip failure 5E: Pad and fill defects 5F: Entire defect span was not found in User Defect List 60: No spares available (for reassignment of defective sectors, tracks, servo labels and any resources required for the current operation in general) 61: Write blocked w/o a reason 62: Write gate came on early 63: Write gate went off late 64: GC thermal sensor fault detected 65: Shock sensor fault detected 66: Attempt made to write at the wrong target location. 68: FW initiated disc sequencer reset 69: FW sequencer abort; split sector runaway RG 70: Bad disc resident cert/diag code 71: Unable to read system sectors code 72: Unable to read packwriter auto-stamp 73: Invalid defect info loaded 74: Invalid alt info table (usually refers to reserved defect lists) 88: Unable to learn good zap on track 89: Cylinder to be skipped out in loopback test 8A: Wedge slipped (track portion from sector xxx to sector yyy) 8B: Write ID failed 8C: Cylinder padded (physical coordinates apply to two cylinders at once – translator problems) 8D: Cylinder filled in 8E: Cylinder skipped out 8F: Max cylinder skips has been reached 90: Zapped burst 91: 2 consecutive zapped bursts 92: Too many zapped bursts on a track 93: Unable to zap – 2 consecutive bad bursts 94: Sumsquare of PES (one of adaptive parameters) on this track exceeds limit 95: Unable to zap bad burst 96: Too many position plus velocity threshold breaks 97: Zapped splice code 98: Encroachment code (any corruption of servo packets) 99: Max number of slipped tracks has been reached 9A: The slipped cyl requested does not exist. 9B: Head switch timeout error code A0: Preamp miscommunication A1: Reserve track defect list bad A2: Boot adaptives bad A3: Bad application code A4: Not enough sectors saved to the disc for adaptives A5: Application code checksum error A6: Application code not compatible CE: Cert test passed CF: Cert test failed ED: Attempt to write the user slip list but no valid list FB: Missing critical parameter FC: Command aborted (internal only) FD: R/w command rejected FE: Invalid address passed to Niwot FA: Un-initialized preamp code for new preamp interface FF: Unsupported code in the new preamp interface
* Error Correction Code (ECC) , which protects against read errors as a result of hardware errors in the flash memory. The drive controller monitors the read process and is able to correct hardware read errors up to a certain level.
Fujitsu HDD repair is characterized by some peculiarities. They include the presence of resident microprocessor code (overlay), a large number of incompatible firmware versions, and differences in the HDA construction and service data structure even in the same models with different dates of manufacture
According to the industrial investigations, clean room data recovery has occupied up to 40% of the total revenue in the data recovery industry. Once being “a headache”, the clean room data recovery technology has become one of the marker posts for numerous companies to evaluate their technical level in the industry. Now we start with classifying the hard drive failures or malfunctions, aimed to analyse the technical difficulties in the clean room data recovery and to clear up the key points during the recovery procedure
Data recovery for a hard drive is not as mysterious or as costly as some believe.
It’s very important to understand the firmware structure when you are going to repair hard drives which are not detected due to firmware corruption. The following information is about the firmware architecture in HDD equipped with Parallel Flash. Service data in Seagate drives is recorded in base ROM of the processor chip on PCB, external ROM on the PCB (there may be none, then its role is performed by shadow ROM in the processor chip) and on the disk surface tracks
The following is the general process to handle hitach hard drive diagnosis and repair, it’s not a must-have process but give you one general idea. Actually this process can be also used with other doctors like HD Doctor for WD, Maxtor, Samsung, Toshiba, Fujitsu, etc. HD Doctor for Seagate is different and you need to diagnose by the info displayed in CMD modes and judge.
