Data Recovery Tutorial - Getting started with DDRescue and TestDisk

We've got an introduction to data recovery with DDRescue and TestDisk. TestDisk is probably where you'll want to start. It will help you recover from non-mechanical problems where some piece of software has trashed your disk, partition tables, MBR or that type of problem. It may even be able to help you "unformat" a wiped hard drive, or wiped USB stick.

DDRescue is a variant of the DD program that's setup specifically for data recovery situations. Unlike DD, DDRescue can produce a physical map of unrecoverable, can retry reads and can automatically resume an interrupted DD.

DD stands for something like disk direct, and is a program that simply moves blocks of data from one device to another. It's also possible to move blocks of data from devices to files and vice-versa.

If you are not used to thinking of devices as files, it can be a little bit of a mind warp to think in these terms. However, it is a simple yet powerful tool that allows for complex recovery scenarios.


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