Analysis of the difference between the full auto-calibration and F-class calibration of Czech HDD

When repairing a Seagate hard drive, if a bad channel is badly needed to be fully repaired by calling the factory calibration program, here is the difference between the full auto-calibration of the efficiency source Seagate HDD and the F-class calibration.

Let's start by explaining what a full automatic calibration is:

The Seagate hard drive is shipped with a full test of the new hard drive, which is done by running a program stored in the hard drive's own firmware area, which is called the "calibration program", which can be manufactured and sold after full testing.

The Seagate Cool Fish Series firmware module consists of:

0 ALT G Table module

1 ATA HDD normal operation must module

2 CERT Calibration Code

3 CERT TAB Calibration Process

4 INFO HDD Parameters

5 PL plist Table module

6 TS Meter Module

7 APP Boot Module

8 SECT Batch processing script module

Ten Smart Smart Modules

Different series of hard disk for calibration program distributed in different modules of firmware area, the Seagate Cool Fish series is made up of 2nd Cert module and 3rd Cert tab module, the other series of different plates, here mainly in the cool fish series as an example to illustrate.

When the hard drive is powered on, it will automatically load the app module, complete the loading of the ATA module, complete a series of subsequent tests and read the parameter information, and let the hard disk work in the AGE=50 state.

Calibration program is used to calibrate the repair of hard disk, head test, firmware area of bad track repair, data area bad track repair, a hard drive in normal use calibration program is not working. (This is important).

When the hard disk work for a certain period of time, or environmental problems, or user use problems, there will be a variety of different failures need to call this calibration program to be fully repaired.

Let's talk about the Seagate HDD Cool Fish series. How to turn on full automatic calibration:

Efficiency SOURCE The Seagate Specialization Program provides users with two ways to turn on full automatic calibration:

Open with the "auto-calibrate" option in the specialization program.

Use the CTRL+R command in instruction mode to load the Cert calibration module into the hard disk memory and then manually enter the N2,,22 or n2,aa,22 (extended calibration) carriage return and use the Ctrl+t command to turn it on.

The two methods have the same effect. The function is to call and run the CERT, CERT tab two programs.

Does the calibration program also require a ready-to-use dial to be invoked and opened? Now that my hard drive is out of recognition, can I turn on the automatic calibration?

To answer these two questions, let's briefly say the environment required to run the calibration program:

Research proves that: to repair the hard drive only need to drive normal and complete load of the app and work in the t> mode, you can normally call CERT, CERT tab two modules for calibration work, of course, CERT, CERT tab These two key modules are not damaged can be.

Therefore, do not recognize the disk in the case of the repair drive after the power, the guarantee value instructions to use CTRL + Z command after the "t>", you can open the automatic calibration, (the same as the normal recognition of the same). As for the success of the open depends on the CERT and Cert tab is correct and the hard disk itself.

With the introduction of the above fully automatic calibration, it is easy to understand what the F-level calibration is:

Seagate hard drive F-class concept is no longer explained here, F-level calibration is the hard drive can not be loaded into the app (that is, after the repair drive power after the command can not be to "t>" but "f>"), belongs to only work in the board state, this state is not able to do any operation of the firmware area data. We would like to be able to complete the automatic calibration by the write-back app, CERT, CERT tab in this state, the final realization of the hard disk repair, but the result is: F class can not obtain any information such as "Firmware zone start Address" and so on ... There are other ways to calibrate the program call?

Through the efficiency source specialized program, a matching app module simulates the hard disk itself loading process, direct into the hard disk circuit board memory (board memory reading and writing technology), so that the hard drive into the t> mode, so that the calibration program to achieve the call. The entire boot process is done in the "Boot management" option of the efficiency source specialization program.

The operation here is very simple, only need to select the firmware in the left File selection box, and then select the "" button, after booting the command to return if it is t> indicates that the app loaded successfully, you can open the calibration, follow-up operation and full automatic calibration is identical.

In the actual operation of the F-level calibration, we usually not only load the app module but also load it into memory together with CERT and CERT tab, so many times choose "What is this again?"

In most cases, the APP, CERT, CERT tab must match exactly. The intact module backed up by the same hard drive is used to improve the success rate of school punctuality.

The CERT, CERT TAB in the original firmware area has been corrupted.

Termination: After the above Seagate hard drive roughly works, the calibration procedure works, fully automatic calibration and the principle of f-level calibration analysis, so you can use a sentence to explain the difference between automatic calibration and F-class calibration. That is, "automatic calibration is to repair the disk with the hard drive itself calibration procedures, F-level calibration is the use of guidance or operation of the circuit board memory using external calibration procedures to repair the disk, to change the address of the firmware area, avoid the firmware area bad path, there is a higher success rate of repair."

The specific circumstances in which the choice between the two depends on the current state of the hard disk and calibration program damage.

Analysis of the difference between the full auto-calibration and F-class calibration of Czech HDD