Preparing an image drive to copy files to is the first step in Linux forensics. For this purpose, what would the following command accomplish? dcfldd if=/dev/zero of=/dev/hda bs=4096 conv=noerror…

Question

Options

• AFill the disk with zeros
• BLow-level format
• CFill the disk with 4096 zeros
• DCopy files from the master disk to the slave disk on the secondary IDE controller

• A
  89% (32)
• B
  3% (1)
• C
  6% (2)
• D
  3% (1)

Explanation

This command uses dcfldd (a forensics-enhanced version of dd) to wipe the target drive by filling it entirely with zeros. Breaking down the parameters: 'if=/dev/zero' sets the input source to /dev/zero, a special Linux pseudo-device that generates an endless stream of null bytes (0x00); 'of=/dev/hda' directs output to the entire first hard drive; 'bs=4096' sets the block size to 4096 bytes for efficiency; 'conv=noerror,sync' tells it to continue on read errors and pad incomplete blocks with zeros. The result is a completely zeroed drive - essential in forensics to ensure no prior data contaminates the evidence image. It does not perform a low-level format, write only 4096 zeros, or copy between drives.

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