This message appeared when trying to install grub:

# grub-install /dev/ld0a
Probing devices to guess BIOS drives. This may take a long time.
/dev/ld0a does not have any corresponding BIOS drive.
#

This was on a Dell PowerEdge 1850 with its two drives configured in a 
RAID 1 array by its hardware controller.

A similar thing happened when I tried on a P III with its system disk 
connected to a 3ware SATA RAID card but not in an array:

# grub-install /dev/ld0a
/dev/ld0a does not have any corresponding BIOS drive.
#

grub was built using pkgsrc updated from CVS on 2 March 2006.

I've appended dmesg output from these two machines to this message in 
case it's relevant.


Ray



PE1850
======

NetBSD 3.0 (GENERIC) #0: Mon Dec 19 01:04:02 UTC 2005
builds@works.netbsd.org:/home/builds/ab/netbsd-3-0-RELEASE/i386/200512182024Z-obj/home/builds/ab/netbsd-3-0-RELEASE/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 (686-class), 2992.78 MHz, id 0xf43
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: features2 641d<SSE3,MONITOR,DS-CPL,CID,xTPR>
cpu0: features3 20100000<EM64T>
cpu0: "Intel(R) Xeon(TM) CPU 3.00GHz"
cpu0: I-cache 12K uOp cache 8-way
cpu0: ITLB 4K/4M: 64 entries
cpu0: DTLB 4K/4M: 64 entries
cpu0: running without thermal monitor!
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 product 0x3590 (rev. 0x09)
ppb0 at pci0 dev 2 function 0: Intel product 0x3595 (rev. 0x09)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled, rd/line, wr/inv ok
ppb1 at pci1 dev 0 function 0: Intel product 0x0330 (rev. 0x06)
pci2 at ppb1 bus 2
pci2: i/o space, memory space enabled, rd/line, wr/inv ok
amr0 at pci2 dev 14 function 0: AMI RAID <PERC 4e/Si>
amr0: interrupting at irq 7
amr0: firmware 521X, BIOS H430, 256MB RAM
ld0 at amr0 unit 0: RAID 1, optimal
ld0: 136 GB, 17834 cyl, 255 head, 63 sec, 512 bytes/sect x 286515200 sectors
ppb2 at pci1 dev 0 function 2: Intel product 0x0332 (rev. 0x06)
pci3 at ppb2 bus 3
pci3: i/o space, memory space enabled, rd/line, wr/inv ok
ppb3 at pci0 dev 4 function 0: Intel product 0x3597 (rev. 0x09)
pci4 at ppb3 bus 4
pci4: i/o space, memory space enabled, rd/line, wr/inv ok
ppb4 at pci0 dev 5 function 0: Intel product 0x3598 (rev. 0x09)
pci5 at ppb4 bus 5
pci5: i/o space, memory space enabled, rd/line, wr/inv ok
ppb5 at pci5 dev 0 function 0: Intel product 0x0329 (rev. 0x09)
pci6 at ppb5 bus 6
pci6: i/o space, memory space enabled, rd/line, wr/inv ok
wm0 at pci6 dev 7 function 0: Intel i82541GI 1000BASE-T Ethernet, rev. 5
wm0: interrupting at irq 11
wm0: 32-bit 66MHz PCI bus
wm0: 65536 word (16 address bits) SPI EEPROM
wm0: Ethernet address 00:13:72:4c:4d:03
igphy0 at wm0 phy 1: Intel IGP01E1000 Gigabit PHY, rev. 0
igphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto
ukphy0 at wm0 phy 2: Generic IEEE 802.3u media interface
ukphy0: OUI 0x000000, model 0x0000, rev. 0
ukphy0: no media present
ppb6 at pci5 dev 0 function 2: Intel product 0x032a (rev. 0x09)
pci7 at ppb6 bus 7
pci7: i/o space, memory space enabled, rd/line, wr/inv ok
wm1 at pci7 dev 8 function 0: Intel i82541GI 1000BASE-T Ethernet, rev. 5
wm1: interrupting at irq 3
wm1: 32-bit 66MHz PCI bus
wm1: 65536 word (16 address bits) SPI EEPROM
wm1: Ethernet address 00:13:72:4c:4d:04
igphy1 at wm1 phy 1: Intel IGP01E1000 Gigabit PHY, rev. 0
igphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto
ppb7 at pci0 dev 6 function 0: Intel product 0x3599 (rev. 0x09)
pci8 at ppb7 bus 8
pci8: i/o space, memory space enabled, rd/line, wr/inv ok
uhci0 at pci0 dev 29 function 0: Intel 82801EB/ER USB UHCI Controller 
(rev. 0x02)
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 82801EB/ER USB UHCI Controller 
(rev. 0x02)
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 82801EB/ER USB UHCI Controller 
(rev. 0x02)
uhci2: interrupting at irq 7
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 82801EB/ER USB EHCI Controller 
(rev. 0x02)
ehci0: interrupting at irq 5
ehci0: BIOS has given up ownership
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: single transaction translator
uhub3: 6 ports with 6 removable, self powered
ppb8 at pci0 dev 30 function 0: Intel 82801BA Hub-PCI Bridge (rev. 0xc2)
pci9 at ppb8 bus 9
pci9: i/o space, memory space enabled
Dell Computer product 0x0011 (undefined subclass 0x00) at pci9 dev 5 
function 0 not configured
Dell Computer product 0x0012 (undefined subclass 0x00) at pci9 dev 5 
function 1 not configured
Dell Computer product 0x0014 (undefined subclass 0x00) at pci9 dev 5 
function 2 not configured
cmdide0 at pci9 dev 6 function 0
cmdide0: Silicon Image 0680 (rev. 0x02)
cmdide0: bus-master DMA support present
cmdide0: primary channel wired to native-PCI mode
cmdide0: using irq 5 for native-PCI interrupt
atabus0 at cmdide0 channel 0
cmdide0: secondary channel wired to native-PCI mode
atabus1 at cmdide0 channel 1
vga1 at pci9 dev 13 function 0: ATI Technologies Radeon 7000/VE (rev. 0x00)
wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
pcib0 at pci0 dev 31 function 0
pcib0: Intel 82801EB LPC Interface Bridge (rev. 0x02)
piixide0 at pci0 dev 31 function 1
piixide0: Intel 82801EB IDE Controller (ICH5) (rev. 0x02)
piixide0: bus-master DMA support present
piixide0: primary channel configured to compatibility mode
piixide0: primary channel interrupting at irq 14
atabus2 at piixide0 channel 0
piixide0: secondary channel configured to compatibility mode
piixide0: secondary channel interrupting at irq 15
atabus3 at piixide0 channel 1
isa0 at pcib0
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
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
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
Kernelized RAIDframe activated
atapibus0 at atabus0: 2 targets
sd0 at atapibus0 drive 0: <VIRTUALFLOPPY DRIVE               Flopp, 
, > disk removable
sd0: drive offline
sd0: 32-bit data port
sd0: drive supports PIO mode 3
cd0 at atapibus0 drive 1: <VIRTUALCDROM DRIVE, , > cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 3
sd0(cmdide0:0:0): using PIO mode 3
cd0(cmdide0:0:1): using PIO mode 3
atapibus1 at atabus2: 2 targets
cd1 at atapibus1 drive 0: <HL-DT-ST DVD-ROM GDR-8084N, , 1.01> cdrom removable
cd1: 32-bit data port
cd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
cd1(piixide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA)
uhub4 at uhub3 port 3
uhub4: Dell product 0xa001, class 9/0, rev 2.00/0.00, addr 2
uhub4: multiple transaction translators
uhub4: 2 ports with 2 removable, self powered
uhidev0 at uhub0 port 1 configuration 1 interface 0sd0(cmdide0:0:0): 
Check Condition on CDB: 0x00 00 00 00 00 00
     SENSE KEY:  Not Ready
      ASC/ASCQ:  Medium Not Present

sd0(cmdide0:0:0):  Check Condition on CDB: 0x00 00 00 00 00 00
     SENSE KEY:  Not Ready
      ASC/ASCQ:  Medium Not Present

sd0(cmdide0:0:0):  Check Condition on CDB: 0x00 00 00 00 00 00
     SENSE KEY:  Not Ready
      ASC/ASCQ:  Medium Not Present

sd0(cmdide0:0:0):  Check Condition on CDB: 0x00 00 00 00 00 00
     SENSE KEY:  Not Ready
      ASC/ASCQ:  Medium Not Present

boot device: ld0
root on ld0a dumps on ld0b
root file system type: ffs

uhidev0: Dell DRAC4, rev 1.10/0.00, addr 2, iclass 3/1
ukbd0 at uhidev0
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
uhidev1 at uhub0 port 1 configuration 1 interface 1
uhidev1: Dell DRAC4, rev 1.10/0.00, addr 2, iclass 3/1
ums0 at uhidev1
ums0: X report 0x0002 not supported
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)


PIII with 3ware card
====================

NetBSD 3.99.15 (GENERIC) #0: Sat Feb 25 02:09:55 EST 2006
         ray@pe1850:/usr/obj/sys/arch/i386/compile/GENERIC
total memory = 510 MB
avail memory = 492 MB
BIOS32 rev. 0 found at 0xfda74
mainbus0 (root)
cpu0 at mainbus0: (uniprocessor)
cpu0: Intel Pentium III (686-class), 863.93 MHz, id 0x68a
cpu0: features 383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR>
cpu0: features 383f9ff<PGE,MCA,CMOV,PAT,PSE36,MMX>
cpu0: features 383f9ff<FXSR,SSE>
cpu0: I-cache 16 KB 32B/line 4-way, D-cache 16 KB 32B/line 4-way
cpu0: L2 cache 256 KB 32B/line 8-way
cpu0: ITLB 32 4 KB entries 4-way, 2 4 MB entries fully associative
cpu0: DTLB 64 4 KB entries 4-way, 8 4 MB entries 4-way
cpu0: 8 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 82815 Hub (rev. 0x02)
pchb0: random number generator enabled
agp0 at pchb0: aperture at 0xf8000000, size 0x4000000
vga1 at pci0 dev 2 function 0: Intel 82815 Graphics (rev. 0x02)
wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
ppb0 at pci0 dev 30 function 0: Intel 82801BA Hub-PCI Bridge (rev. 0x01)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
fxp0 at pci1 dev 8 function 0: Intel i82562 Ethernet, rev 1
fxp0: interrupting at irq 11
fxp0: Ethernet address 00:d0:b7:a6:80:37
inphy0 at fxp0 phy 1: i82562ET 10/100 media interface, rev. 0
inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
twe0 at pci1 dev 9 function 0: 3ware Escalade
twe0: interrupting at irq 6
twe0: 4 ports, Firmware FE8S 1.05.00.068, BIOS BE7X 1.08.00.048
twe0: Monitor ME7X 1.01.00.040, PCB Rev5    , Achip 3.20    , Pchip 1.30-66
twe0: port 0: ST3120026AS                              114473 MB
twe0: port 1: ST3120026AS                              114473 MB
twe0: port 2: ST3120026AS                              114473 MB
twe0: port 3: ST3120026AS                              114473 MB
ld0 at twe0 unit 0: JBOD, status: Normal
ld0: 111 GB, 14593 cyl, 255 head, 63 sec, 512 bytes/sect x 234441648 sectors
ld1 at twe0 unit 1: 64K stripe RAID5, status: Normal
ld1: 223 GB, 29186 cyl, 255 head, 63 sec, 512 bytes/sect x 468879104 sectors
fpa0 at pci1 dev 11 function 0: DEC DEFPA PCI FDDI SAS Controller
fpa0: FDDI address 00:00:f8:4a:18:6f, FW=3.10, HW=1, SMT V7.2
fpa0: FDDI Port = S (PMD = ANSI Multi-Mode)
fpa0: interrupting at irq 10
pcib0 at pci0 dev 31 function 0
pcib0: Intel 82801BA LPC Interface Bridge (rev. 0x01)
piixide0 at pci0 dev 31 function 1
piixide0: Intel 82801BA IDE Controller (ICH2) (rev. 0x01)
piixide0: bus-master DMA support present
piixide0: primary channel wired to compatibility mode
piixide0: primary channel ignored (disabled)
piixide0: secondary channel wired to compatibility mode
piixide0: secondary channel ignored (disabled)
uhci0 at pci0 dev 31 function 2: Intel 82801BA USB Controller (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
Intel 82801BA SMBus Controller (SMBus serial bus, revision 0x01) at 
pci0 dev 31 function 3 not configured
uhci1 at pci0 dev 31 function 4: Intel 82801BA USB Controller (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
auich0 at pci0 dev 31 function 5: i82801BA (ICH2) AC-97 Audio
auich0: interrupting at irq 9
auich0: ac97: Analog Devices AD1885 codec; headphone, Analog Devices 
Phat Stereo
auich0: ac97: ext id 1<VRA>
isa0 at pcib0
lpt0 at isa0 port 0x378-0x37b irq 7
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: 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
attimer0 at isa0 port 0x40-0x43: AT Timer
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
npx0: using exception 16
pcppi0: attached to attimer0
isapnp0: no ISA Plug 'n Play devices found
auich0: measured ac97 link rate at 47300 Hz, will use 48000 Hz
audio0 at auich0: full duplex, mmap, independent
Kernelized RAIDframe activated
boot device: ld0
root on ld0a dumps on ld0b
root file system type: ffs
fpa0: Link Unavailable
fxp0: link state changed to UP
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)