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From: static@phoenix.pub.uu.oz.au (geoff c wing)
Newsgroups: comp.sys.amiga,comp.sys.amiga.tech
Subject: Re: Hidden AmigaDOS files?
Message-ID: <1990Nov15.143850.18734@phoenix.pub.uu.oz.au>
Date: 15 Nov 90 14:38:50 GMT
References: <1990Nov13.182903.20247@qut.edu.au>
Organization: Phoenix ComSystem. Public UNIX Melbourne Australia.
Lines: 26

In <1990Nov13.182903.20247@qut.edu.au> inb300campbe@qut.edu.au writes:

>Does anybody know how to make files invisible in AmigaDOS?

>I have seen hidden directories created on a floppy which you can CD into but
>don't show up in a DIR listing, but is it possible under FFS?  HOW?

>  -- David Campbell

>inb300campbe@redgum.qut.edu.au

Yeah, sure, it's easy, although you'll need a disk editor of some kind. What you
do is create a bad hash, somewhere early up, ie.low hash number. Hash numbers go
from 6 - 77. OK., first create a file that you won't use, say 0 bytes long, and
find out what its hash number is. Then delete its block #(remember it) from the 
hash table in the root block or directory block, or go find it in a hash chain
somewhere and delete it from there. Make sure you remember it. Now back to the
root block or directory block you want to stuff up, find the first file in the
hash table, follow the hash chain until you get to the end one and put the block
number you've remembered onto the hash chain word(long word 124). If you don't
understand this then you shouldn't even consider attempting it.
-- 
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	|	     Geoff		//|   /\  |\/|  |  / _   /\
	| static@phoenix.pub.uu.oz.au \X/ |  //\\ |  | _|_ \__| //\\
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