I checked everything twice, compiled with different "config" lines and still can't get it to work.

		swapon: /dev/sd1b: Device not configured

	Here's all the stuff I've done for adding the new swap device:
	The two disks (sd0 & sd1) are identical NEC SCSI2 drives.


*** First the disklabel of the root disk with first 32Mo swap partition

# /dev/rsd0d:
type: SCSI
disk: NetBSD
label: 
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 1416
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0		# milliseconds
track-to-track seek: 0	# milliseconds
drivedata: 0 
5 partitions:
#        size   offset    fstype   [fsize bsize   cpg]
  a:   409248        0    4.2BSD     1024  8192    16 	# (Cyl.    0 - 405)
  b:    65520   409248      swap                    	# (Cyl.  406 - 470)
  c:  1427328        0    unused        0     0       	# (Cyl.    0 - 1415)
  d:  1427328        0    unused        0     0       	# (Cyl.    0 - 1415)
  e:   952560   474768    4.2BSD     1024  8192    16 	# (Cyl.  471 - 1415)


*** Second the disklabel of the usr disk with second 32Mo swap partition (the one not configured)

# /dev/rsd1d:
type: SCSI
disk: nec696usr
label: usr
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 1416
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0		# milliseconds
track-to-track seek: 0	# milliseconds
drivedata: 0
4 partitions:
#        size   offset    fstype   [fsize bsize   cpg]
  a:  1361808        0    4.2BSD     1024  8192     0 	# (Cyl.    0 - 1350)
  b:    65520  1361808      swap                    	# (Cyl. 1351 - 1415)
  d:  1427328        0    unused        0     0       	# (Cyl.    0 - 1415)


*** Third the /etc/fstab file

/dev/sd0a 	/ 		ffs 	rw 0 1
/dev/sd0b 	swap 		swap 	sw 0 0
/dev/sd1a 	/usr 		ffs 	rw 0 2
/dev/sd1b 	swap 		swap 	sw 0 0 <- the faulty one
/dev/sd0e 	/usr/distrib 	ffs 	rw 0 3
/dev/sd2a	/home 		ffs 	rw 0 2 
/kern 		/kern 		kernfs 	rw 0 0
/proc 		/proc 		procfs 	rw 0 0


*** Fourth the devices (surely no problem here)

0 brw-r-----  1 root  operator    4,   1 May 24 12:48 /dev/sd0b
0 brw-r-----  1 root  operator    4,   9 May 24 12:48 /dev/sd1b
0 brw-r-----  1 root  operator    4,  17 May 24 12:48 /dev/sd2b
0 brw-r-----  1 root  operator    4,  25 May 24 12:48 /dev/sd3b


*** Fifth the kernel config line: i tried these with the same result

config		netbsd root on sd0a swap on sd0b and sd1b dumps on sd1b
config		netbsd root on sd0 swap on sd0 and sd1 dumps on sd1b
config		netbsd root on sd0 swap on sd0 and sd1 dumps on sd2b


*** Finally

	I check .../compile/BO/swapnetb.c and it contains sd1 as a swap device.

		dev_t	rootdev = makedev(4, 0);	/* sd0 */
		dev_t	dumpdev = makedev(4, 9);	/* sd1b */
		struct	swdevt swdevt[] = {
			{ makedev(4, 1),	0,	0 },	/* sd0 */
			{ makedev(4, 9),	0,	0 },	/* sd1 */
			{ NODEV, 0, 0 }
		};

	My SCSI card is a AHA2940. Everything works fine and /usr is on sd1.
	Now what could I do? Did I missed something?

	Seb.