Skip to main content

How ATA Registers Work



After some requests from users we have started restoring some of the technical pages we had on our website. There were a few on our old website that are being converted from the old site tro the new one.

The latest one is the page that describes how the ATA registers work on a hard disk drive. With explanations of the purpose of their functions and has been updated to include 48 bit LBA addressing.,

The page can be found at : https://www.mjm.co.uk/articles/how-hard-disk-ata-registers-work.html

We are also in the process of building some technical videos showing exactly what goes on when accessing hard disks.

Comments

Popular posts from this blog

ReFS (Resiliant File System) Data Recovery

MS ReFS (Resiliant File System) Data Recovery Microsoft introduced their Resilient File System (ReFS) with Windows Server 2012. It is a 'self repairing' file system that detects errors and rebuilds data. MjM Data Recovery are now able to recover data from this file system from single drive servers  to multi drive raid systems . Please visit our main website for details of our Data Recovery Services .

Raid Recovery

Raid recovery is a specialist type of data recovery service. RAID is an acronym of R edundant A rray of I nexpensive D rives and consists of at least two drives that are configured as a single volume or container. The most common forms of RAID are described below. RAID 0 requires a minimum of two drives that gives the full disk size of both drives as a single volume the data is stored in stripes each stripe consisting of a block of data on each drive block sizes are typically 64kb but we have block sizes from 4kb to 2 Mb in size. This is the cheapest type of RAID but has no redundancy. If one drive fails, then access to all data on both drives is lost. RAID 1 Requires 2 drives the second drive is an identical copy of the first drive meaning that you only get the equivalent of one drive for the price of two. Expensive but offers redundancy so one drive can fail and you can still access the data on the second drive. RAID 5 Requires a minimum of three drives. Is similar to RAID 0 in...

Chip off memory recovery

MjM Data Recovery Ltd have been recovering data since 1999 Removal of the chips are fairly straightforward. For most of them you can just apply enough heat and they will come off. This stage can become complicated if the devices are glued onto the PCB or are BGA type pads on the bottom of the chip that are not easily accessible. Hot-air guns can be used, but we prefer Infra-Red for BGA type Flash memory removal as the process is cleaner and there is less chance of pad damage. Once the chip has been read, the next stage is very complex. You will need to have access to a NAND flash reader. There are hundreds of different types of chips with varying block sizes, some are designed to be used according to the device controller on the PCB. There are 3 favoured devices for reading NAND chips, there are three main contenders in the Flash Recovery Market. Soft Center Flash reader  Flash Extractor. This has been available since the early 2000's and we bought our first one in 2004 wh...