Return-Path: XPUM04@prime-a.central-services.umist.ac.uk Received: from G.SEI.CMU.EDU by ubu.cert.sei.cmu.edu (5.61/2.3) id AA21588; Thu, 7 Jun 90 16:18:26 -0400 Received: from SEI.CMU.EDU by g.sei.cmu.edu (5.61/2.5) id AA15776; Thu, 7 Jun 90 16:18:25 -0400 Received: from nsfnet-relay.ac.uk by sei.cmu.edu (5.61/2.3) id AA11646; Thu, 7 Jun 90 16:18:18 -0400 Received: from sun.nsfnet-relay.ac.uk by vax.NSFnet-Relay.AC.UK via Janet with NIFTP id aa25044; 7 Jun 90 18:54 BST From: Anthony Appleyard To: KRVW <@NSFnet-Relay.AC.UK:KRVW@sei.cmu.edu> Date: Tue, 05 Jun 90 14:01:00 BST Message-Id: <$TGVGDBVHCNWN at UMPA> Subject: Virus-L vol 0 issue #0602 Virus-L Digest Thu, 2 Jun 88, Volume 0 : Issue #0602 Today's Topics RE: Hard disk disable RE: Hard disk disable Hard Drives RE: Hard disk disable Hard disk protect on Macs ------------------------------ Date: Thu, 2 Jun 88 12:26:27 EST Reply-To: Virus Discussion List Sender: Virus Discussion List From: Peter Furmonavicius Subject: RE: Hard disk disable In-Reply-To: Message of Mon, 30 May 88 12:01:00 EST from To start up a Macintosh SE or Macintosh II from a floppy disk while keeping the internal hard disk offline: Hold down the following four(4) (that's right, four) keys while you start up from a floppy: shift, option, command, delete P.S. get a friend to help with this on a Mac SE with the power switch in the back of the main unit!!! [ Yale University Computer Center ] Peter Furmonavicius [ 175 Whitney Avenue ] Manager, Systems and Programming [ P.O. Box 2112 ] [ New Haven, CT 06520 ] (203) 432-6600 -------------------- Date: Thu, 2 Jun 88 12:59:11 EDT Reply-To: Virus Discussion List Sender: Virus Discussion List From: "Kenneth R. van Wyk" Subject: RE: Hard disk disable In-Reply-To: Message of Thu, 2 Jun 88 12:26:27 EST from >To start up a Macintosh SE or Macintosh II from a floppy disk while keeping >the internal hard disk offline: >Hold down the following four(4) (that's right, four) keys while you start up >from a floppy: shift, option, command, delete Does anyone else remember the game Twister? :-) Does the above sequence actually disable (if even is software) the hard disk, or does it just make it possible to boot from a floppy? That is, is it still possible for a program to read/write to the hard disk after someone does the above sequence? (Assuming, of course, that it's physically possible to press all of those keys at once.) Ken P.S. How many programmers does it take to boot a Mac SE from a floppy? :-) - ---------------------------------------------------------------------- = Kenneth R. van Wyk = = = User Services Senior Consultant = This page intentionally = = Lehigh University Computing Center = left blank. = = Internet: = = = BITNET: = = - ---------------------------------------------------------------------- -------------------- Date: Thu, 2 Jun 88 13:52:56 EDT Reply-To: Virus Discussion List Sender: Virus Discussion List From: Joseph Sieczkowski Subject: Hard Drives Many of you have been curious as to an easy way to disconnect or disable your hard drive for testing programs. Well, on AT and similar machines, you can change the CMOS to tell your computer that it doesn't have a hard drive. So, drive C: will no longer exist. Make sure you save the data in the existing CMOS so you can put it back. (Note: turning the computer off won't restore the CMOS back to normal.) I think I have a program that does this; that is, changes, saves and restores CMOS. I will try to get it to the list. Remember if you're testing software by disabling your hard drive, you're only testing against trojans and bombs. Time-bombs and viruses will probably go unnoticed. Moreover, if a trojan is specifically designed to hit a hard drive, and if it is written well, it will only attempt to do damage after it is sure that the hard drive exists and is working. So even trojans could get past by doing nothing until a hard drive is present. - ---------------------------------------------------------------------- joes@scarecrow.csee.lehigh.edu Joe Sieczkowski joes@lehi3b15.UUCP AI Lab, CSEE Department jws5@lehigh.bitnet Lehigh University ujwsiec@vax1.cc.lehigh.edu Packard Laboratory #19 Bethlehem, PA 18015 -------------------- Date: Thu, 2 Jun 88 14:02:13 EST Reply-To: Virus Discussion List Sender: Virus Discussion List From: Peter Furmonavicius Subject: RE: Hard disk disable In-Reply-To: Message of Thu, 2 Jun 88 12:59:11 EDT from >Does the above sequence actually disable the hard disk, or does it just >make it possible to boot from a floppy? It is always possible to 'boot' from a floppy; just stick a floppy with a system on it into the drive and restart. However if you do just that, the hard disk will still 'come up' and be accessible from the desk top. The sequence I gave will have the system come up from the floppy, but the hard disk will not be accessible (or visible) from the desk top. -------------------- Date: Thu, 2 Jun 88 14:35:00 CST Reply-To: Virus Discussion List Sender: Virus Discussion List From: SailTrim Subject: Hard disk protect on Macs I have a DA that'll write-protect a hard disk (albeit only thru software); if an yone's interested, I can binhex it and post it. It's not all that great, but it should at least fool some of the dumber virii. Petey SPCLAR@MACALSTR.BITNET -------------------- *** end of Virus-L issue ***