I'm in the process of upgrading my system from Mid January sources
to current sources.  As the first step, I downloaded and compiled the
kernel and config sources as of May 30, 1994.  The kernel built itself with
no hitches and I thought I was well on my way to a successful upgrade, when
I tried booting from the new kernel.  I got a message that said it couldn't
mount root.
	I realize that this is probably due to the off_t changes that 
took place some time back, but I don't remember what people were  supposed
to do to bring their filesystem into line with the current kernel.  As a
first step, I tried changing the boot blocks, but this did not work.
	Can someone give me a pointer as to what I must upgrade to run the new
kernel?  I would like to make as few changes to my current system as
possible in order to run the new kernel.  It has proved to be stable for
months and, in fact, the only reason I'm upgrading is to take advantage of
the if_el driver.
Here is my configuration file for a  486DX2 (66 MHZ) 16MB of memory, BT445s
SCSI controller, two 16550a UARTS, and a cp30540 Conner SCSI drive.
Any comments, pointers as to where I should go next would be greatly
appreciated.
-thanks
-Brian

#
# GENERICAHBBT -- Generic machine w/ahb and bt drivers -- distribution floppy
#
#	$Id: GENERICAHBBT,v 1.25 1994/01/06 12:07:50 cgd Exp $
#

machine		"i386"
cpu		"I386_CPU"
cpu		"I486_CPU"
ident		NFBNETBSD
timezone	8 dst
maxusers	40
options		SWAPPAGER,VNODEPAGER,DEVPAGER
options		INET,ISOFS,NFSCLIENT,NFSSERVER,FFS
options		"COMPAT_43"
options		"TCP_COMPAT_42"
options		XSERVER,UCONSOLE
options		MSDOSFS
options		KERNFS
options		SCSI
options		"MATH_EMULATE"
options "COMPAT_09"
options		"COMPAT_NOMID"
options		"MACHINE_NONCONTIG"
options "NMBCLUSTERS=1024"
options		KTRACE
options		FIFOS
options		"USER_LDT"
options GATEWAY

config		netbsd	root on wd0 swap on wd0 and sd0

controller	isa0

device		pc0	at isa? port "IO_KBD" irq 1
device		com0	at isa? port "IO_COM1" irq 4
device		com1	at isa? port "IO_COM2" irq 3
device		com2	at isa? port "IO_COM3" irq 5

device		lpt0	at isa? port "IO_LPT3" irq 7
device		lpt1	at isa? port "IO_LPT1"
device		lpt2	at isa? port "IO_LPT2"

controller	wdc0	at isa? port "IO_WD1" irq 14
disk		wd0	at wdc0 drive ?
disk		wd1	at wdc0 drive ?

controller	fdc0	at isa? port "IO_FD1" irq 6 drq 2
disk		fd0	at fdc0 drive ?
disk		fd1	at fdc0 drive ?

#device		wt0	at isa? port 0x300 irq 5 drq 1

controller	bt0	at isa? port "IO_BT0" irq 11
master		scsibus0 at bt0
disk		sd0	at scsibus0 slave ?
disk		sd1	at scsibus0 slave ?
disk		sd2	at scsibus0 slave ?
disk		sd3	at scsibus0 slave ?
tape		st0	at scsibus0 slave ?
tape		st1	at scsibus0 slave ?
disk		cd0	at scsibus0 slave ?
disk		cd1	at scsibus0 slave ?

controller	ahb0	at isa? irq 11
master		scsibus1 at ahb0
disk		sd0	at scsibus1 slave ?
disk		sd1	at scsibus1 slave ?
disk		sd2	at scsibus1 slave ?
disk		sd3	at scsibus1 slave ?
tape		st0	at scsibus1 slave ?
tape		st1	at scsibus1 slave ?
disk		cd0	at scsibus1 slave ?
disk		cd1	at scsibus1 slave ?

controller	uha0	at isa? port "IO_UHA0" irq 11 drq 5
master		scsibus2 at uha0
disk		sd0	at scsibus2 slave ?
disk		sd1	at scsibus2 slave ?
disk		sd2	at scsibus2 slave ?
disk		sd3	at scsibus2 slave ?
tape		st0	at scsibus2 slave ?
tape		st1	at scsibus2 slave ?
disk		cd0	at scsibus2 slave ?
disk		cd1	at scsibus2 slave ?

controller	aic0	at isa? port 0x340 irq 11 drq 6
master		scsibus3 at aic0
disk		sd0	at scsibus3 slave ?
disk		sd1	at scsibus3 slave ?
disk		sd2	at scsibus3 slave ?
disk		sd3	at scsibus3 slave ?
tape		st0	at scsibus3 slave ?
tape		st1	at scsibus3 slave ?
disk		cd0	at scsibus3 slave ?
disk		cd1	at scsibus3 slave ?

#device ed0 at isa? port 0x280 irq 9 iomem 0xd0000
#device ed1 at isa? port 0x250 irq 9 iomem 0xd8000
#device ed2 at isa? port 0x300 irq 10 iomem 0xcc000
device el0 at isa? port 0x300 irq 9
#device ep0 at isa? port ? irq ?
#device ie0 at isa? port 0x360 irq 7 iomem 0xd0000
#device is0 at isa? port 0x320 irq 10 drq 7
device		sb0	at isa? port 0x220 bio irq 7 drq 1 vector sbintr

device		npx0	at isa? port "IO_NPX" irq 13

pseudo-device	ether
pseudo-device	log
pseudo-device	loop
pseudo-device	pty	48
pseudo-device	sl	1
pseudo-device	speaker
pseudo-device	bpfilter
pseudo-device	ppp
pseudo-device	audio

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