Date: Mon, 26 Jun 1995 08:32:12 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-hackers@freebsd.org (FreeBSD hackers) Subject: Re: 2.05R reboot hangs Message-ID: <199506260632.IAA21939@uriah.heep.sax.de> In-Reply-To: <199506252253.IAA08952@godzilla.zeta.org.au> from "Bruce Evans" at Jun 26, 95 08:53:31 am
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As Bruce Evans wrote: > > >I seem to recall reading somewhere that there's a BIOS routine that > >can be used for rebooting the system. Now, I know using BIOS calls is a > > I couldn't find a standard one in the Interrupt List. There is INT 19h > for the bootstrap loader, but it is unusable even from DOS because it > doesn't unhook hooked vectors. I think that's what they're using. Viruses tend to survive warm boots for just this reason (they modify the int 0x19 vector to prevent the bootstrap routine from destroying them). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)
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