firewolfsm

Golden Member
Oct 16, 2005
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I've never heard of that but it's most likely a firmware hack. Maybe Windows only reads how much space is being used, and checks the drive information for total space.
 

Modelworks

Lifer
Feb 22, 2007
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Its defenitely in the firmware.
Windows doesn't have direct access to any media.
Its always going to go through the controller for the media.
Hack the controller , be it the microprocessor on memory cards or the drive controller on a hard drive and you can make it report whatever you want.
 

Peter

Elite Member
Oct 15, 1999
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You can cheat the OS one layer above drive firmware - just write funny partition data to the drive.

Altering the "reported capacity" field in firmware data is something many drives allow - but only down, not up, unless a buggy firmware lets you.
 

firewolfsm

Golden Member
Oct 16, 2005
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Originally posted by: Peter
Altering the "reported capacity" field in firmware data is something many drives allow - but only down, not up, unless a buggy firmware lets you.

A hacked firmware?
 

Calin

Diamond Member
Apr 9, 2001
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You just need to change the ID the drive reports to Windows, and geometry information, and create a big partition on it. As long as you don't try to write to that area of the partition, it all works just fine
 

Peter

Elite Member
Oct 15, 1999
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Geometry information and ID are (hardcoded) firmware parameters. Partition sizes are not, they're just stored data, thus easily modified.