> "What's the problem?"
> 
> That wasn't given at all, so maybe start at what you do and what happens.
> dmesg output may help.
> 
> If things go worse, have a look at the "umass woe: sd0(umass0:0:0): 
> readonly device & drive offline" thread starting Nov 14 on tech-kern@ for 
> a lot of ideas.
> 
> 
>   - Hubert
> 
here the dmesg outputs:

NetBSD 3.0_RC6 (GENERIC) #0: Fri Dec  9 15:57:03 CET 2005
        root@ULTRAkiller:/usr/src/sys/arch/sparc64/compile/GENERIC
total memory = 384 MB
avail memory = 364 MB
bootpath: /pci@1f,0/pci@1,1/ide@3,0/disk@0,0:f
mainbus0 (root): SUNW,Ultra-5_10: hostid 80f508d0
cpu0 at mainbus0: SUNW,UltraSPARC-IIi @ 400 MHz, version 0 FPU
cpu0: 32K instruction (32 b/l), 16K data (32 b/l), 2048K external (64 b/l)
psycho0 at mainbus0 addr 0xfffc4000
SUNW,sabre: impl 0, version 0: ign 7c0 bus range 0 to 2; PCI bus 0
DVMA map: c0000000 to e0000000
IOTSB: 648000 to 6c8000
pci0 at psycho0
pci0: i/o space, memory space enabled
ppb0 at pci0 dev 1 function 1: Sun Microsystems Simba PCI bridge (rev. 0x13)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
ebus0 at pci1 dev 1 function 0
ebus0: Sun Microsystems PCIO Ebus2, revision 0x01
auxio0 at ebus0 addr 726000-726003, 728000-728003, 72a000-72a003,
72c000-72c003, 72f000-72f003
power at ebus0 addr 724000-724003 ipl 37 not configured
SUNW,pll at ebus0 addr 504000-504002 not configured
sab0 at ebus0 addr 400000-40007f ipl 43: rev 3.2
sabtty0 at sab0 port 0
sabtty1 at sab0 port 1
com0 at ebus0 addr 3083f8-3083ff ipl 41: ns16550a, working fifo
com0: console
kbd0 at com0 (console input)
com1 at ebus0 addr 3062f8-3062ff ipl 42: ns16550a, working fifo
ms0 at com1
wsmouse0 at ms0 mux 0
lpt0 at ebus0 addr 3043bc-3043cb, 30015c-30015d, 700000-70000f ipl 34
fdthree at ebus0 addr 3023f0-3023f7, 706000-70600f, 720000-720003 ipl 39 not
configured
clock0 at ebus0 addr 0-1fff: mk48t59
flashprom at ebus0 addr 0-fffff not configured
audiocs0 at ebus0 addr 200000-2000ff, 702000-70200f, 704000-70400f,
722000-722003 ipl 35 ipl 36: CS4231
A
audio0 at audiocs0: full duplex
hme0 at pci1 dev 1 function 1: Sun Happy Meal Ethernet, rev. 1
hme0: interrupting at ivec 3021
hme0: Ethernet address 08:00:20:f5:08:d0
nsphy0 at hme0 phy 1: DP83840 10/100 media interface, rev. 1
nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
cmdide0 at pci1 dev 3 function 0
cmdide0: CMD Technology PCI0646 (rev. 0x03)
cmdide0: bus-master DMA support present
cmdide0: primary channel configured to native-PCI mode
cmdide0: using ivec 1820 for native-PCI interrupt
atabus0 at cmdide0 channel 0
cmdide0: secondary channel configured to native-PCI mode
atabus1 at cmdide0 channel 1
ppb1 at pci0 dev 1 function 0: Sun Microsystems Simba PCI bridge (rev. 0x13)
pci2 at ppb1 bus 2
pci2: i/o space, memory space enabled
ohci0 at pci2 dev 1 function 0: NEC USB Host Controller (rev. 0x43)
ohci0: interrupting at ivec 10
ohci0: OHCI version 1.0
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: NEC OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1 at pci2 dev 1 function 1: NEC USB Host Controller (rev. 0x43)
ohci1: interrupting at ivec 11
ohci1: OHCI version 1.0
usb1 at ohci1: USB revision 1.0
uhub1 at usb1
uhub1: NEC OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
ehci0 at pci2 dev 1 function 2: NEC USB Host Controller (rev. 0x04)
ehci0: interrupting at ivec 12
ehci0: BIOS has given up ownership
ehci0: EHCI version 1.0
ehci0: companion controllers, 3 ports each: ohci0 ohci1
usb2 at ehci0: USB revision 2.0
uhub2 at usb2
uhub2: NEC EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub2: single transaction translator
uhub2: 5 ports with 5 removable, self powered
esiop0 at pci2 dev 2 function 0: Symbios Logic 53c875 (ultra-wide scsi)
esiop0: using on-board RAM
esiop0: interrupting at ivec 14
scsibus0 at esiop0: 16 targets, 8 luns per target
machfb0 at pci2 dev 3 function 0: ATI Technologies Rage XL (rev. 0x27)
machfb0: 16 MB aperture at 0x01000000, 4 KB registers at 0x02000000
memctl: 10a57a3b
ref_freq=29.498MHz
machfb0: 8188 KB SGRAM 114.992 MHz, maximum RAMDAC clock 230 MHz
machfb0: initial resolution 1280x1024 at 8 bpp
wsdisplay0 at machfb0 kbdmux 1: console (default, sun emulation)
wsmux1: connecting to wsdisplay0
wsdisplay0: screen 1-3 added (default, sun emulation)
pcons at mainbus0 not configured
No counter-timer -- using %tick at 400MHz as system clock.
wskbd0 at kbd0: console keyboard, using wsdisplay0
Kernelized RAIDframe activated
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 0 lun 0: <SEAGATE, ST39236LC, 0005> disk fixed
sd0: 8761 MB, 14384 cyl, 3 head, 415 sec, 512 bytes/sect x 17942584 sectors
sd0: sync (50.00ns offset 16), 16-bit (40.000MB/s) transfers, tagged
queueing
wd0 at atabus0 drive 0: <ST3120026A>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 111 GB, 232581 cyl, 16 head, 63 sec, 512 bytes/sect x 234441648 sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd0(cmdide0:0:0): using PIO mode 4, DMA mode 2 (using DMA)
atapibus0 at atabus1: 2 targets
cd0 at atapibus0 drive 0: <CRD-8322B, 1998/09/24, 1.05> cdrom removable
cd0: drive supports PIO mode 4, DMA mode 2
cd0(cmdide0:1:0): using PIO mode 4, DMA mode 2 (using DMA)
root on wd0f dumps on wd0b
root file system type: ffs
wsdisplay0: screen 4 added (default, sun emulation)
umass0 at uhub2 port 5 configuration 1 interface 0
umass0: USB Flash Disk, rev 2.00/2.00, addr 2
umass0: using SCSI over Bulk-Only
scsibus1 at umass0: 2 targets, 1 lun per target
sd1 at scsibus1 target 0 lun 0: <LG, XTICK, 2.00> disk removable
sd1: fabricating a geometry
sd1: 500 MB, 500 cyl, 64 head, 32 sec, 512 bytes/sect x 1024000 sectors


and

NetBSD 2.0.2_STABLE (GENERIC) #1: Mon Jul 11 10:49:58 CEST 2005
	toor@wxphome02:/usr/src/sys/arch/i386/compile/GENERIC
total memory = 1023 MB
avail memory = 993 MB
BIOS32 rev. 0 found at 0xffe90
mainbus0 (root)
cpu0 at mainbus0: (uniprocessor)
cpu0: Intel Pentium 4 (686-class), 2525.07 MHz, id 0xf27
cpu0: features bfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu0: features bfebfbff<PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX>
cpu0: features bfebfbff<FXSR,SSE,SSE2,SS,HTT,TM,SBF>
cpu0: I-cache 12K uOp cache 8-way, D-cache 8 KB 64B/line 4-way
cpu0: L2 cache 512 KB 64B/line 8-way
cpu0: ITLB 4K/4M: 128 entries
cpu0: DTLB 4K/4M: 64 entries
cpu0: 16 page colors
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0
pchb0: Intel 82845G/GL DRAM Controller / Host-Hub I/F Bridge (rev. 0x01)
agp0 at pchb0: using generic initialization for Intel AGP
agp0: aperture at 0xe0000000, size 0x8000000
ppb0 at pci0 dev 1 function 0: Intel 82845G/GL Host-to-AGP Bridge (rev.
0x01)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
vga1 at pci1 dev 0 function 0: ATI Technologies Radeon 9700/9500 Series
(rev. 0x00)
wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
ATI Technologies Radeon 9700/9500 Series Secondary (miscellaneous display)
at pci1 dev 0 function 1 not configured
uhci0 at pci0 dev 29 function 0: Intel 82801DB/DBM USB UHCI Controller #1
(rev. 0x01)
uhci0: interrupting at irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1 at pci0 dev 29 function 1: Intel 82801DB/DBM USB UHCI Controller #2
(rev. 0x01)
uhci1: interrupting at irq 10
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2 at pci0 dev 29 function 2: Intel 82801DB/DBM USB UHCI Controller #3
(rev. 0x01)
uhci2: interrupting at irq 9
usb2 at uhci2: USB revision 1.0
uhub2 at usb2
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
ehci0 at pci0 dev 29 function 7: Intel 82801DB/DBM USB EHCI Controller (rev.
0x01)
ehci0: interrupting at irq 3
ehci0: EHCI version 1.0
ehci0: companion controllers, 2 ports each: uhci0 uhci1 uhci2
usb3 at ehci0: USB revision 2.0
uhub3 at usb3
uhub3: Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub3: 6 ports with 6 removable, self powered
ppb1 at pci0 dev 30 function 0: Intel 82801BA Hub-to-PCI Bridge (rev. 0x81)
pci2 at ppb1 bus 2
pci2: i/o space, memory space enabled
emuxki0 at pci2 dev 1 function 0: Creative Labs SBLive! EMU 10000 (audio
multimedia, revision 0x0a)
emuxki0: interrupting at irq 11
emuxki0: ac97: EMC40 codec; 18 bit DAC, 18 bit ADC, no 3D stereo
emuxki0: ac97: ext id 280<AMAP,SDAC>
audio0 at emuxki0: full duplex, mmap, independent
joy0 at pci2 dev 1 function 1: Creative Labs PCI Gameport Joystick (rev
0x0a)
joy0: joystick not connected
fxp0 at pci2 dev 8 function 0: Intel PRO/100 VE Network Controller with
82562ET/EZ PHY, rev 129
fxp0: interrupting at irq 11
fxp0: Ethernet address 00:07:e9:bd:ae:1e
inphy0 at fxp0 phy 1: i82562ET 10/100 media interface, rev. 0
inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
ex0 at pci2 dev 12 function 0: 3Com 3c905B-TX 10/100 Ethernet (rev. 0x30)
ex0: interrupting at irq 11
ex0: MAC address 00:10:5a:cf:80:40
exphy0 at ex0 phy 24: 3Com internal media interface
exphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pcib0 at pci0 dev 31 function 0
pcib0: Intel 82801DB LPC Interface Bridge (rev. 0x01)
piixide0 at pci0 dev 31 function 1
piixide0: Intel 82801DB IDE Controller (ICH4) (rev. 0x01)
piixide0: bus-master DMA support present
piixide0: primary channel wired to compatibility mode
piixide0: primary channel interrupting at irq 14
atabus0 at piixide0 channel 0
piixide0: secondary channel wired to compatibility mode
piixide0: secondary channel interrupting at irq 15
atabus1 at piixide0 channel 1
Intel 82801DB/DBM SMBus Controller (SMBus serial bus, revision 0x01) at pci0
dev 31 function 3 not configured
isa0 at pcib0
lpt0 at isa0 port 0x378-0x37b irq 7
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
isapnp0: no ISA Plug 'n Play devices found
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
Kernelized RAIDframe activated
uhidev0 at uhub0 port 2 configuration 1 interface 0
uhidev0: Logitech Trackball, rev 1.10/2.20, addr 2, iclass 3/1
ums0 at uhidev0: 3 buttons and Z dir.
wsmouse0 at ums0 mux 0
wd0 at atabus0 drive 0: <IC35L120AVVA07-0>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 111 GB, 232514 cyl, 16 head, 63 sec, 512 bytes/sect x 234375000 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd0(piixide0:0:0): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using DMA
data transfers)
atapibus0 at atabus1: 2 targets
cd0 at atapibus0 drive 0: <SAMSUNG DVD-ROM SD-616T, , F310> cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
cd1 at atapibus0 drive 1: <HL-DT-ST GCE-8481B, , C102> cdrom removable
cd1: 32-bit data port
cd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
cd0(piixide0:1:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA
data transfers)
cd1(piixide0:1:1): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA
data transfers)
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
umass0 at uhub3 port 1 configuration 1 interface 0
umass0: USB Flash Disk, rev 2.00/2.00, addr 2
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, 1 lun per target
sd0 at scsibus0 target 0 lun 0: <LG, XTICK, 2.00> disk removable
sd0: fabricating a geometry
sd0: 500 MB, 500 cyl, 64 head, 32 sec, 512 bytes/sect x 1024000 sectors
sd0: fabricating a geometry


Holm