Subscribe by RSS
What data recovery tools to buy if you want to start a data recovery business?
Free video data recovery training on how to recover lost data from different hard drives?
Where to buy head and platter replacement tools at good prices?
Data recover case studies step by step guide
I want to attend professional data recovery training courses
Fujitsu Limited has transferred its hard disk drive (HDD) business to Toshiba Corporation on October 1st, 2009. Fujitsu drive initializes itself at power-up as follows:
1. Power-up.
2. Self-diagnostics 1:
– data bus and MPU address test
– writing/reading test of microcircuit registers via internal data bus
– internal RAM writing/reading test.
3. Spindle motor start-up.
4. Self-diagnostics 2:
– buffer RAM writing/reading test.
5. Stabilizing the spindle motor rotation speed.
6. Heads release from latch (magnetic heads’ unparking).
7. Service data reading.
8. Recalibration start.
9. Setting itself in readiness mode (ATA command waiting).
Data recovery Salon welcomes your comments and share with us your ideas, suggestions and experience. Data recovery salon is dedicated in sharing the most useful data recovery information with our users and only if you are good at data recovery or related knowledge, please kindly drop us an email and we will publish your article here. We need to make data recovery Salon to be the most professional and free data recovery E-book online.
4 Comments
Fujitsu Typical Hard Drive Failure:
VCM (voice coil motor) & SPM (spindle motor) controller malfunction. The microcircuit suffers sometimes from the substrate separation defect and local overheating of the crystal. With such malfunction the drive spins up normally, reports on readiness, operates, and after a while the spindle motor stops (it is a defect similar to TDA5247HT chip in Quantum drives).
Integrated chipset contains a microprocessor in some drive families also including the reading/writing channel and interface controller. Malfunctions of that chip become apparent after circuitry heating (especially in summer period) during writing cycles. As a rule in such cases a drive corrupts its own service modules. One can indirectly judge about the microcircuit operability by activity in data bus lines, connected to ROM and buffer RAM chip. If there is none, you should check the presence of power voltage and clock generation or a steady “RESET” signal. Complete check of integrated chipset requires drive testing using PC-3000 universal utility in cyclic mode with writing enabled for at least 3 full passes. If a drive malfunctions, hangs (does not report on readiness), erases firmware modules, then the circuit is defective. In some cases, this can be corrected by microcircuit unsoldering, solder alloy replacement on board pads and the circuit, flushing the residue of old fusing agent and subsequent soldering the microcircuit back
with obligatory flushing.
This is one for the serious business with a need for high availability and disaster recovery in its overall plan.
Useful blog website, keep me personally through searching it, I am seriously interested to find out another recommendation of it.