Date: Wed, 8 Jan 2003 13:07:26 -0700 From: BoB KoT <bobkot@theriver.com> To: current@freebsd.org Subject: system wedges running dd with of=/dev/fd0 Message-ID: <20030108130726.43159e4e.bobkot@theriver.com>
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On a -current cvsuped on Jan2-2003 uname -a FreeBSD k7.jibe.net 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Wed Jan 8 09:21:54 MST 2003 root@k7.jibe.net:/usr/obj/usr/src/sys/GENERIC i386 To reproduce error... cd /somedir where somedir has a valid floppy image file like kern.flp Then... dd if=kern.flp of=/dev/fd0 and machine wedges. In the best cases using a GENERIC kernel the screen goes blank, keyboard is inactive, hard drive light is on 100%. Have to recycle input power to get back in control. WARNING..WARNING..WARNING... In worst cases like the 1st time I noticed this, I was running a custom kernel and using the /sysutils/sdd port. In addition to all the above nasty symptoms on subsequent power up the machine was dead. BIOS had been butchered. I had to go onto the motherboard and force a BIOS reset to factory defaults and then reconfig the BIOS to get the system back to a usable state. VERY UGLY I've tried a lot of test permutations that i'll not go into here, but the above dd incantation fails every invocation. Also note that on this same harddrive I have a partition that runs FreeBSD 4.7R and dd and sdd to/from the floppy work flawlessly. Which makes me tend to believe that this is not a hardware problem. In GENERIC these are all on options DDB options INVARIANTS options INVARIANT_SUPPORT options WITNESS options WITNESS_SKIPSPIN Yet nothing is trapped and I see nothing logged in /var/log/messages. I also have dumpdev="/dev/ad4s4b" dumpdir="/usr/flameout" in my /etc/rc.conf and nothing is getting picked up by savecore in there on reboot. Can anyone else duplicate this? If so then a PR is in order. If not I'll re-cvsup and rebuild and test again and repost for further help. As the cusp of 5.0 Release draws near I am distressed to have run into a problem of this severity. -bob- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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