Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!bu.edu!m2c!wpi.WPI.EDU!acoolidg
From: acoolidg@wpi.WPI.EDU (Aaron P Coolidge)
Newsgroups: comp.periphs.scsi
Subject: Re: WARM SWAP
Message-ID: <1991Apr24.003217.12018@wpi.WPI.EDU>
Date: 24 Apr 91 00:32:17 GMT
Organization: Worcester Polytechnic Institute
Lines: 30


	Hi. I just tried a warm swap on my PC (386sx, 4mb, wd7000 fasst2 SCSI,
quantun 105s). I tried adding my spare drive (a miniscribe *ugh* 20M) while
the machine was up and running. Plugged the sucker into the external port, 
tried a dir of the quantum, it came up OK, tried a dir of the miniscribe,
got an "invalid drive spec" error. Fine. I <ctrl> <alt> <del> 'd it, and
everything came up OK (I could read both drives). Then I unplugged the 
miniscribe, and tried a dir on the quantum. Nothing- the machine just locked
up. Fine. I warm booted it again, and got an "int 19h boot failture". 
So i reset it- another "int 19h boot failture". Terrific, I thought, I just
toasted the WD7000! Power off, wait 1 minute, power on, another "int 19h
boot failture". Wait a minute- maybee the boot block's corrupted! Boot the
machine off a floppy. try a "dir c:". Get: "invalid drive spec". Lovely!
Try FDISK. What?! No partitions defined?! YES, ITS TRUE!!! Ugh! Spend
an hour reformatting and reloading from tape.
	
	Can anyone shed any light on what may have happened here? All the 
partition info had been wiped off the quantum (the miniscribe was fine),
with the result that I couldn't get my data off! No big deal, but a pain none
the less. Was this due to the wd7000, or should I just power off before i 
plug in/ remove SCSI devices? I guess I should!
	
	PS. I plug in and unplug SCSIs all the time wih my Amiga, with it
on, and have had no problems yet.


-- 
Aaron Coolidge
               acoolidg@wpi.wpi.edu    bitnet:sorry, use a gateway.
        "I'm always in control of my car.  Well, at least 70% of the time."