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Hard Disk Recovery Notebook Recovery
Understanding Your Hard Disk Drive

Hard DiskDid you know that everyday you have several plates whirring at 7,200 or more revolutions per minute several inches away from you? That’s faster than most motor car engines. Where, you ask? Meet your hard disk drive. Within the hard disk casing of every hard disk lie three to five rigid glass or aluminium platters which are coated with a magnetic material.

Your data, be they Outlook PST mail files to video AVI, MPEG, DivX files; from Excel spreadsheets, Word files, PowerPoint presentations, Microsoft Access files to photographic JPEG, TIFF or RAW files, all resides on just this thin layer of magnetic material that is spinning at a tremendous speed.

Due to the speed of the platters and the extreme tolerance required for the heads, they are kept in a sealed enclosure. The casing protects the hard disk mechanisms from dust, condensation, and other contamination. The hard disk's read-write heads fly on an air bearing which is a cushion of air only nanometers above the disk surface. The disk surface and the disk's internal environment must therefore be kept immaculate to prevent damage from fingerprints, hair, dust, smoke particles and such, given the sub-microscopic gap between the heads and disk.

To get a sense of the extreme accuracy required in an ordinary hard disk, the diameter of a human hair is tens of thousands nanometers. Even an average bacteria can measure a few hundred nanometers. Hard disk heads operate just a few nanometers above the platter surface. It is like a more than 70 metre long Boeing 747 Jumbo flying at 100kph just 1.5mm above the runway.

So now you understand what do we mean when we refer to "disk crash", when the magnetic heads crash right on the platter.

Hard Disk Recovery

ADRC offers data recovery service on a full range of hard drives from all manufacturers including Toshiba, Western Digital, Seagate, Maxtor, Quantum, IBM, Hitachi, Samsung, Fujitsu and old drives from Compaq, Micropolis, NEC, Conner. The hard disk drive could be any kinds of interface such as IDE, EIDE, PATA, SATA, SCSI, PCMCIA Type I, II, III or CF+ Type II.

Your hard disk could be suffering from any of the followings:

Contact ADRC as recovery of data is still possible.