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- Newsgroups: comp.os.linux
- Path: sparky!uunet!news.claremont.edu!fenris!jwinstea
- From: jwinstea@fenris.claremont.edu (Jim Winstead Jr.)
- Subject: Re: Ctrl-Alt-Del & reboot/halt weirdness
- Message-ID: <1992Sep8.180259.18147@muddcs.claremont.edu>
- Sender: news@muddcs.claremont.edu (The News System)
- Organization: Harvey Mudd College, WIBSTR
- References: <phrn4dk.harp@netcom.com>
- Date: Tue, 8 Sep 1992 18:02:59 GMT
- Lines: 72
-
- In article <phrn4dk.harp@netcom.com> harp@netcom.com (Gregory O. Harp) writes:
- >
- >Oh, I use BootLin to go into Linux. I'm not anxious to go fiddling
- >with my MBR, since I need this machine for business.
-
- I can understand your reluctance, but using LILO as your MBR really is
- quite painless. You can try it out by not making it your MBR, but
- instead making it the boot sector of your Linux root partition, and
- selecting that partition as active - no mucking with anything
- important there.
-
- >Anyway, whenever I do a shutdown or reboot, I get a lockup
- >instead. The following is the output I get when I use these
- >commands (I added the indention):
- >
- > URGENT: message from the sysadmin:
- > System going down IMMEDIATELY!
- >
- > in:
- > ... ...
- >
- > down IMMEDIATELY!
- >
- > in:
-
- Where did you get shutdown from? It looks like it may be corrupt, or
- doing something else strangely. It certainly shouldn't print messages
- like the above.
-
- >No, you're not seeing things. That's it. Happens every time. Then,
- >in the case of reboot, things lock up. I sometimes even get trash on
- >the screen. In the case of halt, it eventually tells me I can shut
- >down, then it locks. I always have to do a hard reset whenever I
- >leave Linux (unless, of course, I just turn the machine off).
-
- Well, halt is supposed to just lock up the machine - after doing all
- the normal shutdown stuff (warning users, umounting partitions) it
- just goes into an infinite loop. I'm not sure what the default
- behavior for shutdown is, but I think that will just 'halt' the
- machine by default, too. If that's true, only the reboot command
- really should do a reboot.
-
- >Well, turning off BIOS shadowing isn't a good solution for me. While
- >Linux doesn't use it, I still have to use DOS/Windows occasionally on
- >this machine. In fact, I will probably be using this machine for my
- >next contract, and the performance hit I take under DOS for not having
- >the BIOS shadowed is large. Turning BIOS shadowing on/off every time
- >I switch OSes isn't such a hot idea, either...
-
- QEMM will do BIOS shadowing for you, if you're using that - it'll just
- map the ROMs to RAM, and you end up with the same type of speed up.
- Otherwise, I personally wouldn't find it that inconvenient to be
- 'forced' to do a hard reset every time I wanted to quit Linux. Right
- now I get an instant reboot from quitting Windows (yes, under DOS)
- that I've learned to cope with. :)
-
- >BTW, playing with the bus I/O speed had no effect on the problem.
- >There was no "Fast A20 Gate" feature like the previous poster had
- >mentioned in my setup...
- >
- >Any other ideas on how to solve these problems?
-
- Really, without keeping the BIOS shadowing off, I can't think of
- much. Upgrading your BIOS might be an option, but not necessarily a
- very reasonable one. There were also patches for having the kernel do
- the reset in a different way at one time, but I don't know what has
- become of those or whether they would even help.
- --
- + Jim Winstead Jr. (CSci '95)
- | Harvey Mudd College, WIBSTR
- | jwinstea@jarthur.Claremont.EDU
- + or jwinstea@fenris.Claremont.EDU
-