FreeBSD 6.0 -RC1 doesn't detect my hard drive

Hi,
i'm trying to install FreeBSD 6.0-RC1 on a Sony Vaio VGN-S4XP and it
doesn't detect de hard disk. It works on FreeBSD 5.4.

Booting FreeBSD 6.0 with acpi enabled detects the cd but not the
HD, without acpi or in safe mode panics:

with acpi disabled or in safe mode (copied by hand):

Fatal trap 9: general protection fault while in kernel mode
instruction pointer          = 0x70:0x81ea
stack pointer                = 0x28:0xeb8
frame pointer                = 0x28:0xf0e
code segment                 = base 0xc00f0000, limit 0xffff, type 0x1b
                             = DPL 0, pres 1, def32 0, gran 0
processor eflags             = interrupt enabled, resume, IOPL = 0
current process              = 0 (swapper)
[thread pid 0 tid 0]
Stopped at      0x81ea: *** error reading from address 81ea ***
db> bt
Tracing pid 0 tid 0 td 0xc0a0d360
(null)(f76cb06,0,3e203e20,f80,bec7000) at 0x81ea
db>

pciconf -lv from FreeBSD 5.4:

hostb0_at_pci0:0:0:        class=0x060000 card=0x81b7104d chip=0x25908086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    class    = bridge
    subclass = HOST-PCI
pcib1_at_pci0:1:0: class=0x060400 card=0x00000088 chip=0x25918086 rev=0x03 hdr=0x01
    vendor   = 'Intel Corporation'
    class    = bridge
    subclass = PCI-PCI
none0_at_pci0:27:0:        class=0x040300 card=0x81cc104d chip=0x26688086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FB/FR/FW/FRW Intel High Deficition Audio Controller'
    class    = multimedia
uhci0_at_pci0:29:0:        class=0x0c0300 card=0x81b9104d chip=0x26588086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FB/FR/FW/FRW USB UHCI Controller'
    class    = serial bus
    subclass = USB
uhci1_at_pci0:29:1:        class=0x0c0300 card=0x81b9104d chip=0x26598086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FB/FR/FW/FRW USB UHCI Controller'
    class    = serial bus
    subclass = USB
uhci2_at_pci0:29:2:        class=0x0c0300 card=0x81b9104d chip=0x265a8086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FB/FR/FW/FRW USB UHCI Controller'
    class    = serial bus
    subclass = USB
uhci3_at_pci0:29:3:        class=0x0c0300 card=0x81b9104d chip=0x265b8086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FB/FR/FW/FRW USB UHCI Controller'
    class    = serial bus
    subclass = USB
none1_at_pci0:29:7:        class=0x0c0320 card=0x81b9104d chip=0x265c8086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FB/FR/FW/FRW USB 2.0 EHCI Controller'
    class    = serial bus
    subclass = USB
pcib2_at_pci0:30:0:        class=0x060401 card=0x00000050 chip=0x24488086 rev=0xd3 
hdr=0x01
    vendor   = 'Intel Corporation'
    device   = '82801BAM/CAM/DBM (ICH2-M/3-M/4-M) Hub Interface to PCI Bridge'
    class    = bridge
    subclass = PCI-PCI
isab0_at_pci0:31:0:        class=0x060100 card=0x81b9104d chip=0x26418086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FBM ICH6M LPC Interface Bridge'
    class    = bridge
    subclass = PCI-ISA
atapci0_at_pci0:31:1:      class=0x01018a card=0x81b9104d chip=0x266f8086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FB ICH6 Ultra ATA Storage Controller'
    class    = mass storage
    subclass = ATA
atapci1_at_pci0:31:2:      class=0x01018f card=0x81ba104d chip=0x26538086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FBM ICH6M SATA Controller'
    class    = mass storage
    subclass = ATA
none2_at_pci0:31:3:        class=0x0c0500 card=0x81b9104d chip=0x266a8086 rev=0x03 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801FB/FR/FW/FRW SMBus Controller'
    class    = serial bus
    subclass = SMBus
none3_at_pci1:0:0: class=0x030000 card=0x81c9104d chip=0x016710de rev=0xa1 hdr=0x00
    vendor   = 'NVIDIA Corporation'
    class    = display
    subclass = VGA
cbb0_at_pci6:5:0:  class=0x060700 card=0x818f104d chip=0xac8e104c rev=0x00 hdr=0x02
    vendor   = 'Texas Instruments (TI)'
    class    = bridge
    subclass = PCI-CardBus
fwohci0_at_pci6:5:2:       class=0x0c0010 card=0x818f104d chip=0x802e104c rev=0x00 
hdr=0x00
    vendor   = 'Texas Instruments (TI)'
    class    = serial bus
    subclass = FireWire
none4_at_pci6:5:3: class=0x018000 card=0x8190104d chip=0xac8f104c rev=0x00 hdr=0x00
    vendor   = 'Texas Instruments (TI)'
    class    = mass storage
fxp0_at_pci6:8:0:  class=0x020000 card=0x81d0104d chip=0x10688086 rev=0x03 hdr=0x00
    vendor   = 'Intel Corporation'
    class    = network
    subclass = ethernet
none5_at_pci6:11:0:        class=0x028000 card=0x27538086 chip=0x42208086 rev=0x05 
hdr=0x00
    vendor   = 'Intel Corporation'
    device   = 'PRO/Wireless 2200BG Network Connection'
    class    = network

verbose boot from FreeBSD 5.4 attached.

-- 
La prueba mas fehaciente de que existe vida inteligente en otros
planetas, es que no han intentado contactar con nosotros.