[comp.os.minix] Minix Crashes

brog@sloth.bc.ca (Chris Brougham) (11/20/90)

Hi Everyone,

[hardware: DTK Turbo XT Kalok 32 meg rll drive 640k ram Hercules Mono]

I've been using Minix 1.5 for about three months now and I am 
generally quite happy with the P-H distribution. However, 
recently my hard disk failed I had to re-install the OS. Since
this time Minix has been crashing quite regularly usually with
the message:

		File system panic: bad major dev 21

The dev number, however, is not always 21--sometimes it's 0.
My first question is: What is the significance of this error message
and why does the number change?

Another thing I've always (even before the disk failure) had problems
with is the amount of time I have to have my computer off to
return it to a known state--usually over 10 minutes after a Minix
crash. Why is this? Surely a minute is enough to clear out any little
nasties un the hardware?

Occasionally (about 20% of the time) Minix crashes after I'm prompted
to insert the /usr diskette in /dev/fd0 with the message:

		Debug exception
		process number 1, pc = 0x15F0:0x00000000

		kernel panic: exception in kernel, mm or fs

Once again what is the significance of the message and how can I avoid
it!?

I also get error nessages (though not as frequent) about inconsistent
memory base....All of this is quite recent since when I first installed
Minix it worked pretty well.

The final problem I'm having is with term. It seemed to work well as a vt100
emulator when I first installed Minix, but once again ever since my hard disk
crash I have found it to be next to useless. Any suggestions here?

And a final question that's not really a problem. Can someone please 
email me directions on how to create a *universal* boot disk ie. what
changes do I need to make  to config.h?

Any help on all this would be *greatly* appreciated as I'm really keen 
on using the OS. If you want to email me I'll summarize.

___

chris brougham
brog@sloth.bc.ca

brougham@ucs.sfu.ca (Chris Brougham) (12/02/90)

Hi,

Thanks to everone who responded. The problems I was having with
Minix 1.5 were do to  too many cards in my P.C. In other words
a power supply problem. I removed some seldom used cards and all
the problems I was having went away. Phew!
-- 
cb...                               chris brougham
                    
				    work: brougham@whistler.sfu.ca
				    home: brog@sloth.bc.ca