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Hard Disk Data Recovery, Pcb Data Recovery, Pendrive Data Recovery, Memory Card Data Recovery, Smartphone Data Recovery

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D1 .1 Introduction to Storage Device , Hard disk types , Models and O.S
  • HDD Traditional Hard disk drives
  • HDD Traditional Hard disk drives
  • Floppy Disk , Zip Drive, Tape Disk,CD/DVD, USB pen drive, Mobile technology storage
  • Types of hard disk 3.5” 2.5” 1.8”
  • Different hard disk converter, ( 1.8 zip, scsi, id, sata , micro sata , sca80, )
  • SSD solid state disk Different types of Hard disk Converter usd
  • Difference between HDD & SDD disk drive
  • Basic understanding between different OS with different version
  • Windows (FAT16, FAT32, NTFS, NTFS5)
  • Unix (UFS, EAFS, HTFS, VxFS, FFS)
  • Linux (Ext2, Ext3,Ext4 JFS, ReiserFS)
  • Apple Macintosh (HFS, HFS+)
  • Novell Netware (NWFS, Net386, NSS)
  • Difference between FAT & NTFS
  • Hard disk different models
  • Identify hard disk size from models no
D1.2 Hard Disk Data recovery common problems, with fault

A . LOGICAL DATA RECOVERY PROBLEMS (disk detected in BIOS are mainly logical problems)
  • Common faults of logical problems
  • Failure of Boot Sector.
  • Master Boot Record MBR Failure
  • Operating System Malfunction or Crash:
  • Partition shows but not access
  • Partition automatic loss
  • Data loss due to virus
  • Format error message
  • Your system will not boot. You might get a message. “no boot-up disk available”
  • A file may contain no data or just partial, even incorrect data.
  • Message hard disk not recognize
  • Message that there is no free space available on disk
  • Corruption of files on files systems
  • Corrupt File System Structure
  • Cross Linked Files
  • Reformatted or Repartitioned Hard Drive
  • recently accessed the data and suddenly you cannot access it.
PHYSICAL PROBLEMS (not detected in bios are main physical problems)

Logic board (controller) failures.
  • Totally dead Hard Drive does not spin up
  • When hard disk connects to computer, computer does not start or hangs Broken power connectors
  • Broken data connectors
  • Spindle/arm driver chip failure
  • You can see a burned component on the hard drive circuit board.
  • Connector of motor or head is damaged
  • Printed circuit board failures including pre-amplification
  • TVS diode blow up
  • Protection fuse, 0ohms resistor open
  • PCB Damaged due to liquid
  • Fire Damage
  • Ceramic capacitor short
  • Mosfet short, or not giving output
  • Data connector resistor open
  • lectric shock
  • Pcb circuit open / short
  • Clicking hard drive
  • Drive not spinning
  • Head crash
  • Damaged Platters
  • Actuator failure
  • Stepper motor failure
  • Spindle bearing seizure (block)
  • More voice from hard disk
  • Head stuck on platter
  • Liquid Damage
  • Fire Damage
  • Dropped Hard Drives
  • Hard disk not found in bios at all
  • Model of hard disk shows wrong
  • Head sticking voice ( may be due to firmware if hardware ok )
  • Shows up with wrong S/N
  • Show up with wrong Model no
  • Hard disk spinning but not shown in bios
  • Hard disk asked for password
  • Bad sector
  • Hang up on particular sectors
  • Identifies fine but fails to read any data or boot up operating system giving I/O Device errors
  • mart error
  • Primary Master Hard Disk Fail
  • No operating system found
  • USB Device malfunctioned
  • S.M.A.R.T. Capable But Command Failed
  • Disk boot failure. Insert system disk and press enter
  • Hard drive not recognized
  • Drive Mount Failure or some other hard drive boot error.
  • The hard disk will spin up when powered on, but be incorrectly recognized / not recognized at all by the computer
  • The hard disk will spin up & be recognized correctly by the computer but the system will then hang during the boot process
D1 .3 Understanding Hard Disk Structure
  • Hard disk structure
  • Disk Platter
  • Read Write Head
  • Spindle motor
  • Head arm
  • Head actuator (voice coil actuator)
  • Air Filter
  • Tracks
  • Sectors
  • Cylinders
  • Cluster
  • Cluster size in FAT& NTFS
  • CHS cylinder head sector addressing
  • ZBR zoned boot record
  • Types of connection
  • LBA& CHS calculation
  • Sector Cluster addressing
  • Logical & physical addressing
  • HDA head and disk assembly
  • PCB printed circuit board
  • MCU micro Controller Unit
  • VCM voice coil motor controller
  • Buffer Memory
  • Flash chips
  • Shock sensor
  • TVS diode transient voltage suppression diode
  • Breath hole
  • Head contacts
  • Motor Contacts
  • Recirculation filter
  • Top dumper
  • Top platter
  • Platter clamp
  • Top magnet
  • Plate with heads and connectors
  • HSA head stack assembly
  • HSA stopper
  • CM voice coil motor
  • VCM HSA Actuator
  • Arm
  • HGA Head Gimbals Assembly
  • Bearing
  • FPC flexible printer circuit
  • Gasket
  • Sliders
  • ABS air bearing surface
  • Preamp
  • Heater
  • Gimbal
  • Platter Clamp
  • Spacer ring
  • WD Internal parts demo
D1.5 Understanding data stored on hard disk & Microsoft files structure
  • What is a file system?
  • Types of files systems
  • DOS 3.3 (FAT12)
  • DOS 5.0 (FAT16)
  • Windows 3.1 (FAT16)
  • Windows 95 (FAT32 OSR 2)
  • Windows 98/ME (FAT32)
  • Windows NT/2K/XP (FAT32 / NTFS)
  • FAT file allocation table
  • NTFS New technology files system
  • How FAT works
  • How data store in hard disk in fat
  • Explaining disk block allocation method
  • File slack space
  • Linked allocation
  • Attributes of files systems
  • NTFS File attributes
  • MFT files working idea
  • Deleting NTFS FILES
D1.6 working concept of Format, Partition & computer booting process,
  • Initializing a Hard drive
  • Low level Format (factory)
  • Initializing a hard drive with FDISK
  • Master partition table
  • Partition type codes
  • Partition table entry
  • Single primary partition
  • One primary with extended partition
  • Boot process
  • Hard disk boot sequence (dos)
  • Windows 2000 boot process
  • Post, MBR, Boot Record
  • MBR (Master Boot Record)
  • GPT (GUID Partition Table)
  • NTFS
  • Partition boot sector
  • MFT (master file table)
  • Used of different software
D1.7 Data recovery Software used for different problems, steps with features
  • Data Recovery of MBR corrupted
  • Data Recovery of Deleted Files
  • Data Recovery from Deleted Partition
  • Data Recovery from Reformatted Partition
  • Data Recovery from External Drives
  • Data Recovery from USB Drive
  • Data Recovery from Camera Card
  • Data Recovery from CD/DVD
  • Data Recovery as RAW Recovery
  • Data Recovery from Damaged Sector
  • Data Recovery from RAID
Recovery Features
  • FAT Support
  • NTFS Support
  • Quick Scan
  • Deep Scan
  • Media File Recovery
  • Email Files Recovery
  • Microsoft Office File Recovery
  • Recovers from Unbootable Drive
Search and Recovery Options
  • Search by File Extension
  • Search by Date
  • Search by File Size
  • File Preview
  • Batch Recovery
  • Saves Scan Information
  • Network Recovery
  • Help & Support
  • Supported Configurations
  • Windows 7
  • Windows Vista
  • Windows XP
Top common data recovery software used in market
  • Stellar Phoenix
  • R Studio
  • Data rescue
  • Get data back
  • Icare
  • Power data recovery
  • Salvation
  • Encase
  • Kernel
  • Ptods
  • Hard disk Stennar
  • Hard disk Regenerator
Corrupted files repair software
  • Excell repair
  • Access repair
  • Power point repair
  • Jpg repair
  • Backup files
  • Repai video master avi, divx,xvid,mpeg, rm, rmvb, asf, wmv, wma , ac3
Understanding Basic concept of RAID

D1. 8 Pen drive and Memory card logically data recovery concept
  • Pen drive data recovery
  • Memory card data recovery concept
  • Data recovery from Pen drives
  • Data recovery from memory card
  • Data recovery from Zip drives concept
  • Data recovery concept of iPods, Digital cameras, Mobile phone, etc
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