Grub boot fails

[Robert E. Harvey, M.D.]

Hello folks. I've successfully made my grub boot disk but booting my
system fails at the following point:

request_module [block-major-8]: Root fs not mounted
VFS: Cannot open root device "sda5" or 08:05
Please append a correct "root=" boot option

I'm running a Red Hat 7.1 system with 2 SCSI HDDs.

My lilo. conf is as follows:

boot=/dev/sda5
map=/boot/map
install=/boot/boot.b
prompt
timeout=50
message=/boot/message
default=linux
lba32

image=/boot/vmlinuz-2.4.2-2
 label=linux
 initrd=/boot/initrd-2.4.2-2.img
 read-only
 root=/dev/sda5

other=/dev/sda9
 label=dos


The pertinent parts of dmesg are:

Partition check:
 sda: sda1 sda2 sda3 < sda5 sda6 sda7 sda8 sda9 > sda4
(scsi0:0:1:0) Synchronous at 40.0 Mbyte/sec, offset 63.
SCSI device sdb: 35861388 512-byte hdwr sectors (18361 MB)
 sdb: sdb1 sdb2 sdb3 sdb4
SCSI device sdc: 489532 512-byte hdwr sectors (251 MB)
sdc: Write Protect is off
 sdc: unknown partition table
(scsi0:0:6:0) Synchronous at 20.0 Mbyte/sec, offset 15.
SCSI device sdd: 3915600 512-byte hdwr sectors (2005 MB)
sdd: Write Protect is off
 sdd: sdd4
VFS: Mounted root (ext2 filesystem) readonly.
change_root: old root has d_count=3
Trying to unmount old root ... okay
Freeing unused kernel memory: 236k freed
Adding Swap: 136512k swap-space (priority -1)
Adding Swap: 125944k swap-space (priority -2)
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-uhci.c: $Revision: 1.251 $ time 20:53:29 Apr  8 2001
usb-uhci.c: High bandwidth mode enabled
usb-uhci.c: USB UHCI at I/O 0xe000, IRQ 10
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
Winbond Super-IO detection, now testing ports 3F0,370,250,4E,2E ...
Winbond chip at EFER=0x3f0 key=0x87 devid=52 devrev=f4 oldid=ff
Winbond chip type 83977EF / SMSC 97w35x
Winbond LPT Config: cr_30=01 60,61=0378 70=07 74=03, f0=07
Winbond LPT Config: active=yes, io=0x0378 irq=7, dma=3
Winbond LPT Config: irqtype=pulsed low, high-Z, ECP fifo threshold=0
Winbond LPT Config: Port mode=ECP and EPP-1.7
SMSC Super-IO detection, now testing Ports 2F0, 370 ...
0x378: FIFO is 16 bytes
0x378: writeIntrThreshold is 16
0x378: readIntrThreshold is 16
0x378: PWord is 8 bits
0x378: Interrupts are ISA-Pulses
0x378: ECP port cfgA=0x10 cfgB=0x48
0x378: ECP settings irq=7 dma=<none or set by other means>
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE,COMPAT,EPP,ECP]
parport0: irq 7 detected
parport0: cpp_daisy: aa5500ff(98)
parport0: assign_addrs: aa5500ff(98)
parport0: cpp_daisy: aa5500ff(98)
parport0: assign_addrs: aa5500ff(98)
ip_conntrack (3072 buckets, 24576 max)
3c59x.c:LK1.1.13 27 Jan 2001  Donald Becker and others.
http://www.scyld.com/network/vortex.html
See Documentation/networking/vortex.txt
eth0: 3Com PCI 3c905B Cyclone 100baseTx at 0xe400,  00:01:02:07:0d:76,
IRQ 11
  product code 4347 rev 00.12 date 01-27-00
  8K byte-wide RAM 5:3 Rx:Tx split, autoselect/Autonegotiate interface.
  MII transceiver found at address 24, status 786d.
  Enabling bus-master transmits and whole-frame receives.
eth0: scatter/gather disabled. h/w checksums enabled
eth0: using NWAY device table, not 8
eth0: using NWAY device table, not 8
Winbond Super-IO detection, now testing ports 3F0,370,250,4E,2E ...
Winbond chip at EFER=0x3f0 key=0x87 devid=52 devrev=f4 oldid=ff
Winbond chip type 83977EF / SMSC 97w35x
Winbond LPT Config: cr_30=01 60,61=0378 70=07 74=03, f0=07
Winbond LPT Config: active=yes, io=0x0378 irq=7, dma=3
Winbond LPT Config: irqtype=pulsed low, high-Z, ECP fifo threshold=0
Winbond LPT Config: Port mode=ECP and EPP-1.7
SMSC Super-IO detection, now testing Ports 2F0, 370 ...
0x378: FIFO is 16 bytes
0x378: writeIntrThreshold is 16
0x378: readIntrThreshold is 16
0x378: PWord is 8 bits
0x378: Interrupts are ISA-Pulses
0x378: ECP port cfgA=0x10 cfgB=0x48
0x378: ECP settings irq=7 dma=<none or set by other means>
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE,COMPAT,EPP,ECP]
parport0: irq 7 detected
parport0: cpp_daisy: aa5500ff(98)
parport0: assign_addrs: aa5500ff(98)
parport0: cpp_daisy: aa5500ff(98)
parport0: assign_addrs: aa5500ff(98)
lp0: using parport0 (polling).
Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory: 322M
agpgart: Detected Intel 440BX chipset
agpgart: AGP aperture is 64M @ 0xe0000000
[drm] AGP 0.99 on Intel 440BX @ 0xe0000000 64MB
[drm] Initialized mga 2.0.1 20000928 on minor 63
Attached scsi CD-ROM sr0 at scsi0, channel 0, id 4, lun 0
(scsi0:0:4:0) Synchronous at 20.0 Mbyte/sec, offset 16.
sr0: scsi3-mmc drive: 32x/32x writer cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.12
parport0: Timed out
parport0: Timed out
parport0: Timed out
Uniform CD-ROM driver unloaded
address@hidden user]$


What kind of "root=' option do I need to define?


TIA

Bob Harvey