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Posting-Version: version B 2.10.2 9/18/84; site nicmad.UUCP
Path: utzoo!linus!philabs!cmcl2!harvard!uwvax!astroatc!nicmad!brown
From: brown@nicmad.UUCP
Newsgroups: net.micro.pc
Subject: Re: Hiding Files?
Message-ID: <501@nicmad.UUCP>
Date: Wed, 8-Jan-86 10:52:44 EST
Article-I.D.: nicmad.501
Posted: Wed Jan  8 10:52:44 1986
Date-Received: Sat, 11-Jan-86 05:34:41 EST
References: <1236@pucc-i>
Reply-To: brown@nicmad.UUCP (Mr. Video)
Organization: Nicolet Instrument Corp. Madison WI
Lines: 36
Keywords: files, security

In article <1236@pucc-i> aic@pucc-i.UUCP (Craig Norborg aka Doc Pierce) writes:
>
>    For security purposes at a place I work, we were wondering if it was
>possible in ms-dos to make files so that people couldn't write onto them.
>One possible way we thought of was just to make the files so they can't 
>see them by "hiding" them like some of the system files.  I know write 
>protecting a floppy is one way, but this doesn't help with a hard drive.
>Any suggestions/help would be greatly appreciated.

One way is to use the PC-DOS ATTRIB command, which allows you to change the 
Read Only attribute.  You could also get Norton's Utilites, 3.0+, and use
the sector r/w capabilities and manual change the directory entry so that you
can hide and read protect the file.

A MS-DOS directory entry is like this:

	Bytes 0-7   Filename
	      8-10  Extension
	      11    File Attribute
		    01h read only
		    02h hidden file
		    04h system file
		    08h filename+ext = volume label (root directory only)
		    10h subdirectory name
		    20h archive bit

You add up the bits in byte 11 to get the combination you want.

Hope this helps.
-- 

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