I'll try to explain this as best as I can. I'm using Red Hat in a work environment as the system that runs my Netbackup. My predecessor was using 1Tb Western Digital external HD's and they worked great but now were upgrading to 2Tb drives and I have to format them and make sure then work correctly.

I have been able to format them in Red Hat and they have worked with Netbackup however the only way I can get them mounted is by having them plugged in and then restarting the whole system. The older drives are completely plug and play. Here are the steps that I have been following;

#fdisk -l
#fdisk /dev/sda1

Command (m for help):n (to make a new partition)
(then I select "p" to make a primary patition)
Partition number (1-4):1
"enter" (for default first cylinder)
"enter" (for default last cylinder)

then I set the file system type with;
Command (m for help):t
followed by "83" for the code to use the standard linux format
then the "w" command to write the partition and exit fdisk

Next I create the new filesystem on the drive with the command;
#mkfs -t ext3 /dev/sda1
the format runs,

then I finalize the format with;
#fsck -f -y /dev/sda1

followed by a restart, which of course the drive comes up. But if I unmount the drive and remove it and then plug it back in nothing comes up. Trying to manually mount it doesn't come up with anything. I have attempted this with 3 different brand new Western Digital external HD's.

what am I doing wrong here???? I've looked in the fstab and when I plug in the old hd's it comes up with the command to mount it. With the new one's its not there unless I do the complete system restart.

Does anything show up on dmesg after you plug the disk back?

can I just type dmesg in the terminal? I'm kinda just learning linux.

Yes you can. :-)
Open a terminal and type dmesg. If you are unsure on how to read all the info, paste here please.

ok, I've typed it in and here is what comes up

Linux version 2.6.9-67.EL (brewbuilder@ls20-bc1-14.build.redhat.com) (gcc versio n 3.4.6 20060404 (Red Hat 3.4.6-8)) #1 Wed Nov 7 13:41:13 EST 2007
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000007f7f0000 (usable)
BIOS-e820: 000000007f7f0000 - 000000007f800000 (reserved)
BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
1143MB HIGHMEM available.
896MB LOWMEM available.
found SMP MP-table at 000f9bf0
Using x86 segment limits to approximate NX protection
zapping low mappings.
On node 0 totalpages: 522224
DMA zone: 4096 pages, LIFO batch:1
Normal zone: 225280 pages, LIFO batch:16
HighMem zone: 292848 pages, LIFO batch:16
DMI 2.3 present.
ACPI: RSDP (v000 COMPAQ ) @ 0x000eaa10
ACPI: RSDT (v001 COMPAQ CPQ0051 0x20021230 0x00000000) @ 0x000e6740
ACPI: FADT (v001 COMPAQ BROOKDG 0x00000001 0x00000000) @ 0x000e67f8
ACPI: SSDT (v001 COMPAQ PROJECT 0x00000001 MSFT 0x0100000e) @ 0x000e7439
ACPI: SSDT (v001 COMPAQ CORE_PNP 0x00000001 MSFT 0x0100000e) @ 0x000e7b76
ACPI: SSDT (v001 COMPAQ CORE_UTL 0x00000001 MSFT 0x0100000e) @ 0x000e80b0
ACPI: SSDT (v001 COMPAQ VILLTBL1 0x00000001 MSFT 0x0100000e) @ 0x000e824b
ACPI: SSDT (v001 COMPAQ LGCYLITE 0x00000001 MSFT 0x0100000e) @ 0x000e8553
ACPI: SSDT (v001 COMPAQ UART2 0x00000001 MSFT 0x0100000e) @ 0x000e8a92
ACPI: SSDT (v001 COMPAQ FLOPPY 0x00000001 MSFT 0x0100000e) @ 0x000e8bf9
ACPI: MADT (v001 COMPAQ BROOKDG 0x00000001 0x00000000) @ 0x000e686c
ACPI: SSDT (v001 COMPAQ APIC 0x00000001 MSFT 0x0100000e) @ 0x000ea6be
ACPI: SSDT (v001 COMPAQ PNP_PRSS 0x00000001 MSFT 0x0100000e) @ 0x000e91b5
ACPI: SSDT (v001 COMPAQ UR2_PRSS 0x00000001 MSFT 0x0100000e) @ 0x000e95d9
ACPI: SSDT (v001 COMPAQ FPY_PRSS 0x00000001 MSFT 0x0100000e) @ 0x000e9746
ACPI: SSDT (v001 COMPAQ S3 0x00000001 MSFT 0x0100000e) @ 0x000e98f7
ACPI: SSDT (v001 COMPAQ CORE_S3 0x00000001 MSFT 0x0100000e) @ 0x000e9a2c
ACPI: SSDT (v001 COMPAQ PIDETM 0x00000001 MSFT 0x0100000e) @ 0x000e9b67
ACPI: SSDT (v001 COMPAQ GTF0 0x00000001 MSFT 0x0100000e) @ 0x000e9e52
ACPI: SSDT (v001 COMPAQ SIDETM 0x00000001 MSFT 0x0100000e) @ 0x000e9cda
ACPI: SSDT (v001 COMPAQ GTF2 0x00000001 MSFT 0x0100000e) @ 0x000ea157
ACPI: SSDT (v001 COMPAQ L08 0x00000001 MSFT 0x0100000e) @ 0x000ea461
ACPI: SSDT (v001 COMPAQ FINIS 0x00000001 MSFT 0x0100000e) @ 0x000ea859
ACPI: DSDT (v001 COMPAQ DSDT 0x00000001 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0xf808
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
Processor #0 15:2 APIC version 20
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
Enabling APIC mode: Flat. Using 0 I/O APICs
ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Using ACPI (MADT) for SMP configuration information
Allocating PCI resources starting at 80000000 (gap: 7f800000:7f400000)
Built 1 zonelists
Kernel command line: ro root=/dev/VolGroup00/LogVol00 rhgb quiet
mapped APIC to ffffd000 (fee00000)
Initializing CPU#0
CPU 0 irqstacks, hard=c0409000 soft=c0408000
PID hash table entries: 4096 (order: 12, 65536 bytes)
Detected 2392.290 MHz processor.
Using pmtmr for high-res timesource
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 2065732k/2088896k available (2169k kernel code, 22156k reserved, 725k da ta, 172k init, 1171392k highmem)
Calibrating delay using timer specific routine.. 4787.39 BogoMIPS (lpj=2393699)
Security Scaffold v1.0.0 initialized
SELinux: Initializing.
SELinux: Starting in permissive mode
There is already a security framework initialized, register_security failed.
selinux_register_security: Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
CPU: After generic identify, caps: bfebfbff 00000000 00000000 00000000
CPU: After vendor identify, caps: bfebfbff 00000000 00000000 00000000
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: After all inits, caps: bfebf3ff 00000000 00000000 00000080
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU0: Intel P4/Xeon Extended MCE MSRs (12) available
CPU0: Thermal monitoring enabled
CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz stepping 07
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=-1
checking if image is initramfs... it is
Freeing initrd memory: 1279k freed
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.20 entry at 0xeca48, last bus=5
PCI: Using configuration type 1
mtrr: v2.0 (20020519)
ACPI: Subsystem revision 20040816
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 *5 6 7 10 11 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 *5 6 7 10 11 14 15)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 *10 11 14 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 10 *11 14 15)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 *5 6 7 10 11 14 15)
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 *11 14 15)
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 *5 6 7 10 11 14 15)
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 *5 6 7 10 11 14 15)
ACPI: PCI Root Bridge [PCI0] (00:00)
PCI: Probing PCI hardware (bus 00)
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB_._PRT]
Linux Plug and Play Support v0.97 (c) Adam Belay
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: Using ACPI for IRQ routing
ACPI: PCI Interrupt 0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 177
ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 185
ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 193
ACPI: PCI Interrupt 0000:00:1f.5[B] -> GSI 17 (level, low) -> IRQ 201
ACPI: PCI Interrupt 0000:05:04.0[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI Interrupt 0000:05:08.0[A] -> GSI 20 (level, low) -> IRQ 209
ACPI: PCI Interrupt 0000:05:09.0[A] -> GSI 18 (level, low) -> IRQ 193
ACPI: PCI Interrupt 0000:05:09.1[B] -> GSI 21 (level, low) -> IRQ 217
ACPI: PCI Interrupt 0000:05:09.2[C] -> GSI 22 (level, low) -> IRQ 225
ACPI: PCI Interrupt 0000:05:09.3[A] -> GSI 18 (level, low) -> IRQ 193
ACPI: PCI Interrupt 0000:05:0a.0[A] -> GSI 21 (level, low) -> IRQ 217
ACPI: PCI Interrupt 0000:05:0a.1[B] -> GSI 22 (level, low) -> IRQ 225
ACPI: PCI Interrupt 0000:05:0a.2[C] -> GSI 16 (level, low) -> IRQ 169
apm: BIOS not found.
audit: initializing netlink socket (disabled)
audit(1285058086.672:1): initialized
highmem bounce pool size: 64 pages
Total HugeTLB memory allocated, 0
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
SELinux: Registering netfilter hooks
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key CA81342F869DADAA
- User ID: Red Hat, Inc. (Kernel Module GPG key)
PCI: Via IRQ fixup for 0000:05:09.0, from 10 to 1
PCI: Via IRQ fixup for 0000:05:09.1, from 11 to 9
PCI: Via IRQ fixup for 0000:05:0a.0, from 11 to 9
PCI: Via IRQ fixup for 0000:05:0a.1, from 5 to 1
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
ACPI: Processor [CPU0] (supports C1, 8 throttling states)
Real Time Clock Driver v1.12
Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected an Intel 845G Chipset.
agpgart: Maximum main memory to use for agp memory: 1911M
agpgart: Detected 8060K stolen memory.
agpgart: AGP aperture is 128M @ 0xf0000000
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 68 ports, IRQ sharing enabled
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
divert: not allocating divert_blk for non-ethernet device lo
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH4: IDE controller at PCI slot 0000:00:1f.1
PCI: Enabling device 0000:00:1f.1 (0005 -> 0007)
ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 193
ICH4: chipset revision 1
ICH4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0x24a0-0x24a7, BIOS settings: hdaMA, hdbio
ide1: BM-DMA at 0x24a8-0x24af, BIOS settings: hdcMA, hddio
Probing IDE interface ide0...
hda: ST380011A, ATA DISK drive
Using cfq io scheduler
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: LTN486S, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide4...
Probing IDE interface ide5...
hda: max request size: 1024KiB
hda: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=16383/255/63, UDMA(100)
hda: cache flushes supported
hda: hda1 hda2
hdc: ATAPI 48X CD-ROM drive, 120kB Cache, DMA
Uniform CD-ROM driver Revision: 3.20
ide-floppy driver 0.99.newide
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.0:USB HID core driver
mice: PS/2 mouse device common for all mice
input: AT Translated Set 2 keyboard on isa0060/serio0
input: ImExPS/2 Generic Explorer Mouse on isa0060/serio1
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
NET: Registered protocol family 2
IP route cache hash table entries: 65536 (order: 6, 262144 bytes)
TCP established hash table entries: 262144 (order: 9, 2097152 bytes)
TCP bind hash table entries: 131072 (order: 9, 3670016 bytes)
TCP: Hash tables configured (established 262144 bind 131072)
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
ACPI wakeup devices:
PCI0 HUB COM1 COM2 USB1 USB2 USB3 EUSB PBTN
ACPI: (supports S0 S1 S3 S4 S5)
Freeing unused kernel memory: 172k freed
SCSI subsystem initialized
libata version 2.00 loaded.
device-mapper: 4.5.5-ioctl (2006-12-01) initialised: dm-devel@redhat.com
cdrom: open failed.
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
security: 3 users, 4 roles, 356 types, 26 bools
security: 55 classes, 22665 rules
SELinux: Completing initialization.
SELinux: Setting up existing superblocks.
SELinux: initialized (dev dm-0, type ext3), uses xattr
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
SELinux: initialized (dev selinuxfs, type selinuxfs), uses genfs_contexts
SELinux: initialized (dev mqueue, type mqueue), not configured for labeling
SELinux: initialized (dev hugetlbfs, type hugetlbfs), uses genfs_contexts
SELinux: initialized (dev devpts, type devpts), uses transition SIDs
SELinux: initialized (dev eventpollfs, type eventpollfs), uses genfs_contexts
SELinux: initialized (dev pipefs, type pipefs), uses task SIDs
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
SELinux: initialized (dev futexfs, type futexfs), uses genfs_contexts
SELinux: initialized (dev sockfs, type sockfs), uses task SIDs
SELinux: initialized (dev proc, type proc), uses genfs_contexts
SELinux: initialized (dev bdev, type bdev), uses genfs_contexts
SELinux: initialized (dev rootfs, type rootfs), uses genfs_contexts
SELinux: initialized (dev sysfs, type sysfs), uses genfs_contexts
SELinux: initialized (dev usbfs, type usbfs), uses genfs_contexts
inserting floppy driver for 2.6.9-67.EL
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
e100: Copyright(c) 1999-2005 Intel Corporation
ACPI: PCI Interrupt 0000:05:08.0[A] -> GSI 20 (level, low) -> IRQ 209
divert: allocating divert_blk for eth0
e100: eth0: e100_probe: addr 0xfc500000, irq 209, MAC addr 00:0B:CD:02:0A:07
r8169 Gigabit Ethernet driver 2.2LK-NAPI loaded
ACPI: PCI Interrupt 0000:05:04.0[A] -> GSI 16 (level, low) -> IRQ 169
divert: allocating divert_blk for eth1
eth1: Identified chip type is 'RTL8169s/8110s'.
eth1: RTL8169 at 0xf8874800, 00:08:54:47:d2:80, IRQ 169
ACPI: PCI Interrupt 0000:00:1f.5[B] -> GSI 17 (level, low) -> IRQ 201
PCI: Setting latency timer of device 0000:00:1f.5 to 64
intel8x0_measure_ac97_clock: measured 50047 usecs
intel8x0: clocking to 48000
hw_random: RNG not detected
ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 185
ehci_hcd 0000:00:1d.7: EHCI Host Controller
PCI: Setting latency timer of device 0000:00:1d.7 to 64
ehci_hcd 0000:00:1d.7: irq 185, pci mem f8986000
SELinux: initialized (dev usbdevfs, type usbdevfs), uses genfs_contexts
ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
PCI: cache line size of 128 is not supported by device 0000:00:1d.7
ehci_hcd 0000:00:1d.7: USB 2.0 enabled, EHCI 1.00, driver 2004-May-10
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 6 ports detected
ACPI: PCI Interrupt 0000:05:09.2[C] -> GSI 22 (level, low) -> IRQ 225
ehci_hcd 0000:05:09.2: EHCI Host Controller
ehci_hcd 0000:05:09.2: irq 225, pci mem f8988900
ehci_hcd 0000:05:09.2: new USB bus registered, assigned bus number 2
ehci_hcd 0000:05:09.2: USB 2.0 enabled, EHCI 1.00, driver 2004-May-10
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 4 ports detected
ACPI: PCI Interrupt 0000:05:0a.2[C] -> GSI 16 (level, low) -> IRQ 169
ehci_hcd 0000:05:0a.2: EHCI Host Controller
ehci_hcd 0000:05:0a.2: irq 169, pci mem f898aa00
ehci_hcd 0000:05:0a.2: new USB bus registered, assigned bus number 3
ehci_hcd 0000:05:0a.2: USB 2.0 enabled, EHCI 1.00, driver 2004-May-10
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 4 ports detected
USB Universal Host Controller Interface driver v2.2
ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 169
uhci_hcd 0000:00:1d.0: UHCI Host Controller
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: irq 169, io base 00002440
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 4
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 177
uhci_hcd 0000:00:1d.1: UHCI Host Controller
usb 1-1: new high speed USB device using address 2
PCI: Setting latency timer of device 0000:00:1d.1 to 64
uhci_hcd 0000:00:1d.1: irq 177, io base 00002460
uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 5
hub 5-0:1.0: USB hub found
hub 5-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:05:09.0[A] -> GSI 18 (level, low) -> IRQ 193
uhci_hcd 0000:05:09.0: UHCI Host Controller
uhci_hcd 0000:05:09.0: irq 193, io base 000014c0
uhci_hcd 0000:05:09.0: new USB bus registered, assigned bus number 6
hub 6-0:1.0: USB hub found
hub 6-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:05:09.1[B] -> GSI 21 (level, low) -> IRQ 217
uhci_hcd 0000:05:09.1: UHCI Host Controller
Initializing USB Mass Storage driver...
scsi0 : SCSI emulation for USB Mass Storage devices
Vendor: WD Model: My Book 3.0 1123 Rev: 1006
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sda: 3907024896 512-byte hdwr sectors (2000397 MB)
sda: assuming drive cache: write through
SCSI device sda: 3907024896 512-byte hdwr sectors (2000397 MB)
sda: assuming drive cache: write through
sda:<6>uhci_hcd 0000:05:09.1: irq 217, io base 000014e0
uhci_hcd 0000:05:09.1: new USB bus registered, assigned bus number 7
sda1
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
USB Mass Storage device found at 2
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
hub 7-0:1.0: USB hub found
hub 7-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:05:0a.0[A] -> GSI 21 (level, low) -> IRQ 217
uhci_hcd 0000:05:0a.0: UHCI Host Controller
uhci_hcd 0000:05:0a.0: irq 217, io base 00001800
uhci_hcd 0000:05:0a.0: new USB bus registered, assigned bus number 8
hub 8-0:1.0: USB hub found
hub 8-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:05:0a.1[B] -> GSI 22 (level, low) -> IRQ 225
uhci_hcd 0000:05:0a.1: UHCI Host Controller
uhci_hcd 0000:05:0a.1: irq 225, io base 00001820
uhci_hcd 0000:05:0a.1: new USB bus registered, assigned bus number 9
hub 9-0:1.0: USB hub found
hub 9-0:1.0: 2 ports detected
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
SELinux: initialized (dev ramfs, type ramfs), uses genfs_contexts
NET: Registered protocol family 10
Disabled Privacy Extensions on device c038a3a0(lo)
IPv6 over IPv4 tunneling driver
divert: not allocating divert_blk for non-ethernet device sit0
ACPI: Power Button (FF) [PWRF]
EXT3 FS on dm-0, internal journal
kjournald starting. Commit interval 5 seconds
EXT3 FS on hda1, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
SELinux: initialized (dev hda1, type ext3), uses xattr
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda1, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
SELinux: initialized (dev sda1, type ext3), uses xattr
Adding 1015800k swap on /dev/VolGroup00/LogVol01. Priority:-1 extents:1
SELinux: initialized (dev binfmt_misc, type binfmt_misc), uses genfs_contexts
IA-32 Microcode Update Driver: v1.14 <tigran@veritas.com>
microcode: CPU0 updated from revision 0x33 to 0x37, date = 06042003
IA-32 Microcode Update Driver v1.14 unregistered
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE]
parport0: irq 7 detected
ip_tables: (C) 2000-2002 Netfilter core team
ip_tables: (C) 2000-2002 Netfilter core team
ADDRCONF(NETDEV_UP): eth0: link is not ready
e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
ip_tables: (C) 2000-2002 Netfilter core team
r8169: eth1: link up
SELinux: initialized (dev rpc_pipefs, type rpc_pipefs), uses genfs_contexts
SELinux: initialized (dev 0:14, type nfs), uses genfs_contexts
SELinux: initialized (dev 0:15, type nfs), uses genfs_contexts
SELinux: initialized (dev 0:16, type nfs), uses genfs_contexts
SELinux: initialized (dev 0:17, type nfs), uses genfs_contexts
eth0: no IPv6 routers present
eth1: no IPv6 routers present
CIFS: Unknown mount option _netdev
SELinux: initialized (dev cifs, type cifs), uses genfs_contexts
CIFS: Unknown mount option _netdev
SELinux: initialized (dev cifs, type cifs), uses genfs_contexts
cdrom: open failed.
i2c /dev entries driver
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE]
parport0: irq 7 detected
lp0: using parport0 (polling).
lp0: console ready
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 0
ACPI: PCI Interrupt 0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 169
[drm] Initialized i915 1.1.0 20040405 on minor 0:
mtrr: base(0xf0020000) is not aligned on a size(0x800000) boundary
atkbd.c: Unknown key released (translated set 2, code 0x81 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e001 <keycode>' to make it known.
atkbd.c: Unknown key pressed (translated set 2, code 0xd9 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e059 <keycode>' to make it known.
atkbd.c: Unknown key released (translated set 2, code 0x81 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e001 <keycode>' to make it known.
atkbd.c: Unknown key pressed (translated set 2, code 0xd9 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e059 <keycode>' to make it known.
atkbd.c: Unknown key released (translated set 2, code 0x81 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e001 <keycode>' to make it known.
atkbd.c: Unknown key pressed (translated set 2, code 0xd9 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e059 <keycode>' to make it known.
usb 1-1: USB disconnect, address 2
usb 1-1: new high speed USB device using address 3
scsi1 : SCSI emulation for USB Mass Storage devices
Vendor: WD Model: My Book 3.0 1123 Rev: 1006
Type: Direct-Access ANSI SCSI revision: 02
sda: Spinning up disk....ready
SCSI device sda: 3907024896 512-byte hdwr sectors (2000397 MB)
sda: assuming drive cache: write through
SCSI device sda: 3907024896 512-byte hdwr sectors (2000397 MB)
sda: assuming drive cache: write through
sda: sda1
Attached scsi disk sda at scsi1, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi1, channel 0, id 0, lun 0, type 0
USB Mass Storage device found at 3
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda1, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
SELinux: initialized (dev sda1, type ext3), uses xattr
atkbd.c: Unknown key released (translated set 2, code 0x81 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e001 <keycode>' to make it known.

Well, your dmesg says your disk is there.. which is a good thing I guess :-)

---------------
usb 1-1: USB disconnect, address 2
usb 1-1: new high speed USB device using address 3
scsi1 : SCSI emulation for USB Mass Storage devices
Vendor: WD Model: My Book 3.0 1123 Rev: 1006
Type: Direct-Access ANSI SCSI revision: 02
sda: Spinning up disk....ready
SCSI device sda: 3907024896 512-byte hdwr sectors (2000397 MB)
sda: assuming drive cache: write through
SCSI device sda: 3907024896 512-byte hdwr sectors (2000397 MB)
sda: assuming drive cache: write through
sda: sda1
Attached scsi disk sda at scsi1, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi1, channel 0, id 0, lun 0, type 0
USB Mass Storage device found at 3
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda1, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
SELinux: initialized (dev sda1, type ext3), uses xattr
-----------------
Have your tried typing mount command to see where it is mounted?