Voom Shadow 3, User Manual

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5  Command Description

5.1  Zero Shadow Command

The Zero Shadow command will make the Shadow unit forget any writes it has 
made to its internal Shadow drive.
Shadow 3 will automatically zero itself every time you connect the Shadow unit to
a new Suspect/Source drive.  Manual zeroing of the Shadow drive should only be
necessary when you want to continue investigating the same Source drive but 
want to start from scratch.
It is not recommended to issue the Zero Shadow command while the Host 
computer is turned on as it will likely confuse the computer's operating system.

5.2  Wipe Shadow Command

The Wipe Shadow command will wipe the Shadow drive with a fixed byte value 
across all LBAs.  Wipe also locks the Shadow.
It is not recommended to issue the Wipe Shadow command while the Host 
computer is turned on as it will likely confuse the computer's operating system.

5.3  Park Drives Command

The Park Drives command will tell the Source drive and Shadow drive to “park” 
their heads in preparation for powering off.  This controlled shutdown does not 
stress the hard drives the way an unexpected “emergency” shutdown will.
Shadow 3 will automatically issue the Park command to the drives during normal 
operation.
It is recommended to issue the Park Drives command every time the Shadow's 
LCD does not display 

parked

 before you turn it off.  (e.g. If the Host computer 

did not shutdown properly.)

5.3.1  Spin Drives Command

When the drives are already parked, the menu option becomes Spin Drives.  The
Spin Drives command will spin the drives back up.  Use this command before 
turning the Host computer back on to speed the boot process.

5.4  Lock Shadow Command

The Lock Shadow command will place the Shadow in simple write block mode.  
Any writes that would go to the Shadow drive are simply thrown away.
The Shadow will remain locked until it is turned off.

5.5  Toggle Ctrl Blk Command

Toggle the behavior the Shadow 3 will use regarding the HD control block 
between Classic mode and Compatible mode.  The Shadow 3 ships in Classic 

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