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Showing posts from April, 2010

Seagate 7200.11 Hard Disk Drives

Known issues with these hard drives came to light mid 2008 when MjM Data Recovery started receiving drives that were displaying extraordinary symptoms. Either the drive would not show in the BIOS or if it did it would show has have 0 bytes capacity. We started work straight away and found the problem to be in logs in the factory area of the drive. Data Recovery We found a method of repairing the drives and started recovering data. Seagate were made aware of the problem and issued a fix in the form of a firmware update. However, the firmware fix would not work on drives that had already failed as the built-in operating system of the drive recognises there is a problem and sets the drive into 'failsafe' mode. So users that were aware of the problem could update their firmware and fix their drives as long as they had not already become affected with the problem. The first firmware update actually made the problem worse with some drives. After applying the firmware update, th

Memory Stick Data Recovery

It happens when you least want it. You memory card for one reason or another has stopped working. You may be lucky and find that it is still working and you can run data recovery software on it to get your data back. But what if it is completely dead, the dog has bitten it in half, it's been through a 90 degree wash in the washing machine or it has just plain stopped working? Never fear, in the vast majority of cases the data is still on there. Its just that it can not be accessed in the normal way. At MjM Data Recovery we remove the physical memory chips and read them, reassemble the dumps into readable structures and then recover the data - it is not a simple process and involves considerable effort. We started our advanced memory recovery processes in 2004 and have been fine tuning them ever since, almost every week we come up against a new type of wear levelling algorythm but very few get past our techniques and we have happy customers throughout the world willing to testif

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