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- Xref: sparky comp.sys.ibm.pc.hardware:37081 comp.sys.ibm.pc.misc:17079
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- From: jcmorris@mwunix.mitre.org (Joe Morris)
- Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
- Subject: Re: Restricting boot from A drive (security)
- Message-ID: <jcmorris.727981296@mwunix>
- Date: 25 Jan 93 17:01:36 GMT
- References: <1jssp7INNeqn@usenet.INS.CWRU.Edu> <1k116pINN638@boa.cis.ohio-state.edu>
- Sender: news@linus.mitre.org (News Service)
- Organization: The MITRE Corporation
- Lines: 47
- Nntp-Posting-Host: mwunix.mitre.org
-
- imes@cis.ohio-state.edu (jeffrey imes) writes:
-
- >In article <1jssp7INNeqn@usenet.INS.CWRU.Edu> ck060@cleveland.Freenet.Edu (Eric L. Hinson) writes:
-
- >>Is there a way to make an IBM PC/AT [NOT] boot from the 'A:' drive? Or
- >>what programs are availible to make it so that if you DO boot from the A
- >>drive, you can't access data on the C, D, etc, drives? Your help would
- >>be greatly appreciated. Thanks
-
- >You should be able to set this up through the BIOS settings you install prior
- >to the boot up of your computer. A line should read in which order the drives
- >should be accessed for system boot-up. Usually reads A:,C: or some similar
- >combination. By reassigning the A: and C: drives (C:,A:) or just removing the
- >A: drive specification altogether, you could force a boot from the C: drive.
-
- I don't think that the AT BIOS includes that feature. You can specify
- the type of disks installed, but my experience with true-Blue AT units
- says that there was no way to select the boot search order.
-
- OTOH, there were several major revisions of the BIOS over the life of the AT,
- so it's possible that the feature appeared late in its life cycle.
-
- There are various security packages on the market which do various nasty
- things to the fixed disk, and which can undo these nasty things only if
- the user enters the appropriate magic word. The only one I have any
- experience with is Fischer International's "Watchdog", and my experience
- with it was nowhere enough to allow me to recommend or discourage its use.
- It seems to be popular enough that Fischer has a booth at most of the
- trade shows here (Washington, DC) which are aimed at government users.
-
- >Of course, if the security measures are against computer-wizards, they can just
- >as easily change it back. At worst, you could disable the floppy drives by
- >disconnecting it from the controller card (of course that defeats the purpose
- >of having floppies, but if security is already that bad....)
-
- Some of the recently-announced PS/2 units have provided an answer to this.
- Their setup procedures include the ability to prohibit floppy boots, and
- the external case is alarmed in a manner which disables the entire system
- if someone tampers with it.
-
- If the tamper switches are activated, you need a super-password to reset the
- unit, and IBM documentation states that if you lose the super-password
- there is no way of operating the box: you must replace the system board.
- For a discussion of the new security features, see the current issue
- of IBM Systems Journal.
-
- Joe Morris
-