The probability of recovering data from such systems depends largely on the size of the journal and on how long the operating system worked after a certain file was deleted. Journaled file systems Ext3 and Ext4 perform the deleting operations via the journal. One of the features within Ext2 is that the file system removes partially the information about deleted files, in particular, links to file names, which makes recovering such file names an almost impossible task. The main descriptor table of a group of blocks is removedīy default, most modern Linux distributives use the Ext4 file system, in the same way as older distributives typically used Ext3 or Ext2 file systems, and the whole thing started one day in the past with them using the original Ext system.Tests and benchmarks for data recovery tools. File system structure and the algorithm used to find the lost data.
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