We provide in house data recovery for hard drives, cd roms, flash drives and Solid State Drives (SSD)
DATA RECOVERY For Regular Disk
For rotational drives, most fail incrementally. That is, not all files are destroyed at once. If the motor spins and the heads move, most failures are what is known as bad blocks. This is where parts of the disks is unreadable, but other parts are. So data recovery is able to retrieve the data from parts that are readable. Fortunately, not all data of the drive is valuable to the customer, like operating system information, so even though some of the data is corrupted, it may be possible to reconstruct the useful info from the remaining good data. However, this may be a long, time consuming process.
Sometimes there are complete failures, like the motor no longer spins, or the heads are out of alignment, and clicks as it searches back and forth for the alignment mark. In these cases, the data is safe, but unable to access, so the drive must be opened and then the platters placed on a separate motor and head assembly and extracted.
Another source of data corruption are malware and virus attackts. A typical virus actually changes various files, while malware changes the way the system operates, and may delete or substitute other files. Even after the virus is cleaned, many files need to be recovered.
Because the environment inside a hard drive hast to be very clean, since the platter spins at thousands of RPM, typically 7000 RPM for a 3.5 inch drive, 3000 RPM for a 2.5 drive, and 10,000 RPM or more for high speed server drives, and the heads fly over the platter disk in micros above the surface (less than the width of a human hair) any dust will cause a disk crash (a scratch on the disk which renders that part of the disk unuseable).
Hence data recovery is typically an expensive process.
List of Services:
Data Recovery Level 1: Able to read Files
In this case, the hard drive is readable, but it has been accidentally formatted or the partition removed, or accidentally deleted. Fortunately, it is normally possible to retrieve this data by using software that will reconstruct the partition or deleted files, then reconstruct it
Data Recovery Level 2: Unable to read Files, but Hard drive not damaged
Here, the files are not directly readable, but the hard drive has not had physical damage. Special software, plus judicious manual inspection and reconstruction techniques can restore critical files and perform the data recovery.
Data Recovery Level 3: Hard drive repair
In this case, the Hard drive is damaged and needs repair.. This is the common bad blocks problem. Because of critical nature of hard drive platters, and the extreme density of the data, it is prohibitively expensive to create perfect defect free hard drives. Hard drive manufacturers take into account of this and provide spare sectors (empty areas of the drive). If due to again, defects, or whatever, causes certain parts of the drive to be unreadable, the hard drive electronics will reprogram itself to use the spare areas, and exclude the bad areas.
However, if the drive fails while holding critical data, then we have a crash. The drive can normally be repaired via software and once data is retrieved, the drive can be used again. However, this is highly NOT recommended. The reason is the spare drive sectors are normally not sequential, so after data recovery, and reallocation of the spare sectors, the drive performance is typically degraded, sometimes seriously.
Data Recovery Level 4: Hard drive badly damaged
In this case, the hard drive has serious physical damage. This includes bad blocks, but also drive electronics, and motor controller. In this case, if the motor works and heads work, it is possible to replace the drive components and restart the drive. However, every drive has a chip which holds the original factory information on the bad blocks found during manufacture. This chip has to be copied or transfer to the new drive board to make the drive read correctly.
Data Recovery Level 5: Sent out Third Party
In this case, the motor itself is dead or the head motors are not working. The drive needs to be sent out to a clean room where the motor or heads can be replaced and so the data recovery can be completed.