rootkit behavior

[rainmann () sbcglobal net]

Can a rootkit hide on a seperate physical disk from the operating system? In other words, if WINNT is on c:\ can the 
rootkit live on physically seperate data drives e:\ and f:\?

I have a client who wants his c:\ drive reformatted and reloaded to insure that no rogue program remains.  I haven't 
been able to give him a definitive answer concerning his extensive data drives.

Also, does anyone know of any useful detection tools other than RootKit Revealer and Blacklight? I saw the post the 
other day about Helios but read that 1) it requires the .Net framework (ouch!) and 2) doesn't work for Win2K.

Any advice here would be greatly appreciated. 

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