Active
KillDisk

Erase Hard Disk
Wiping Ext2fs/Ext3fs/Ext4fs

How to erase hard drive? Windows7 logo   How to erase hard drive? Intel logo

Wiping Ext2fs/Ext3fs/Ext4fs

A Linux Ext file system (Ext2/Ext3/Ext4) volume has a global descriptors table. Descriptors table records are called group descriptors and describe each blocks group. Each blocks group has an equal number of data blocks.

A data block is the smallest allocation unit: size vary from 1024 bytes to 4096 bytes. Each group descriptor has a blocks allocation bitmap. Each bit of the bitmap shows whether the block is allocated (1) or available (0). KillDisk software enumerates all groups, and for each and every block within the group on the volume checks the related bitmap to define its availability. If the Block is available, KillDisk wipes it using the method supplied by the user.

killdisk, wiping Ext2fs/Ext3fs/Ext4fs

Specifics of Wiping Algorithms for Different File Systems

  1. Wiping NTFS
  2. Wipe FAT
  3. Wipe HFS+
  4. Wiping Ext2fs/Ext3fs/Ext4fs

This document is available in PDF format, which requires Adobe® Acrobat® Reader
(Free download):

USER'S GUIDE (for DOS)
Size: 494 KB

USER'S GUIDE
Size: 714 KB

USER'S GUIDE (for Linux)
Size: 683 KB

KillDisk Datasheet
Size: 2,44 MB

Data Recovery

Data Utility

Data Security

Data Backup

CD/DVD Tools