External Drive Didn't Mount

Must be my day ... second problem post!
When attempting to run "Repair Disk" on an external LaCie Firewire/800 drive, I got a message that the disk "could not unmount".
Before I could copy the error code, the system (running off of the CD) crashed.
The disk no longer mounts.
All suggestions welcome!
Thanks.

These tips may or may not help. If that drive needs a repair that Disk Utility can't handle you'll need DiskWarrior to repair it. Get the CD, not the download, so you can boot from it.
External hard drive spontaneously unmounted? Try these tips:
NEW FIRMWARE: Try updating your external hard drive's firmware, which is available from your drive manufacturers Web site--or just use VersionTracker's (www.versiontracker.com) search function to find it. Be sure to back up your data before applying the update, and carefully follow the manufacturers instructions.
OUT OF iSIGHT: If you're using an iSight camera while you're using a FireWire drive, the camera may be interfering with the drive's ability to stay mounted. Try temporarily disconnecting your iSight and moving it to a separate FireWire port. If you have multiple FireWire devices, try using a FireWire hub.
POWER PROBLEM: A faulty power adapter could be causing your drive to unmount. Your drive may not be getting enough juice to stay on, causing the drive to turn off and thereby unmounting it from your Mac. Alternately, the power adapter may not be providing a steady amount of power, causing your drive to turn on and off. Try replacing the adapter. If you can't get a replacement adapter from the hard drive manufacturer, try your local electronics store. Just make sure the adapter you choose has the same connector and input/output voltage. you can find the input/output voltage on the adapter itself.
Cheers!
DALE
DiskWarrior.

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       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:     Apple_partition_scheme                        *111.8 Gi   disk0
       1:        Apple_partition_map                         31.5 Ki    disk0s1
       2:             Apple_Driver43                         28.0 Ki    disk0s2
       3:             Apple_Driver43                         28.0 Ki    disk0s3
       4:           Apple_Driver_ATA                         28.0 Ki    disk0s4
       5:           Apple_Driver_ATA                         28.0 Ki    disk0s5
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       7:         Apple_Driver_IOKit                         256.0 Ki   disk0s7
       8:              Apple_Patches                         256.0 Ki   disk0s8
       9:                  Apple_HFS Mac Leopard II          91.8 Gi    disk0s10
      10:                  Apple_HFS Mac Tiger               19.7 Gi    disk0s12
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       0:     Apple_partition_scheme                        *186.3 Gi   disk1
       1:        Apple_partition_map                         31.5 Ki    disk1s1
       2:             Apple_Driver43                         28.0 Ki    disk1s2
       3:             Apple_Driver43                         28.0 Ki    disk1s3
       4:           Apple_Driver_ATA                         28.0 Ki    disk1s4
       5:           Apple_Driver_ATA                         28.0 Ki    disk1s5
       6:             Apple_FWDriver                         256.0 Ki   disk1s6
       7:         Apple_Driver_IOKit                         256.0 Ki   disk1s7
       8:              Apple_Patches                         256.0 Ki   disk1s8
       9:                  Apple_HFS Mac Leopard I           186.2 Gi   disk1s10
    /dev/disk2
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:     Apple_partition_scheme                        *465.8 Gi   disk2
       1:        Apple_partition_map                         31.5 Ki    disk2s1
       2:             Apple_Driver43                         28.0 Ki    disk2s2
       3:             Apple_Driver43                         28.0 Ki    disk2s3
       4:           Apple_Driver_ATA                         28.0 Ki    disk2s4
       5:           Apple_Driver_ATA                         28.0 Ki    disk2s5
       6:             Apple_FWDriver                         256.0 Ki   disk2s6
       7:         Apple_Driver_IOKit                         256.0 Ki   disk2s7
       8:              Apple_Patches                         256.0 Ki   disk2s8
       9:                  Apple_HFS 500 GB HD               465.6 Gi   disk2s10
    /dev/disk3
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:     Apple_partition_scheme                        *931.5 Gi   disk3
       1:        Apple_partition_map                         31.5 Ki    disk3s1
       2:             Apple_Driver43                         28.0 Ki    disk3s2
       3:             Apple_Driver43                         28.0 Ki    disk3s3
       4:           Apple_Driver_ATA                         28.0 Ki    disk3s4
       5:           Apple_Driver_ATA                         28.0 Ki    disk3s5
       6:             Apple_FWDriver                         256.0 Ki   disk3s6
       7:         Apple_Driver_IOKit                         256.0 Ki   disk3s7
       8:              Apple_Patches                         256.0 Ki   disk3s8
       9:                  Apple_HFS 1 TB Music Drive II     931.4 Gi   disk3s10
    /dev/disk4
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:     Apple_partition_scheme                        *931.5 Gi   disk4
       1:        Apple_partition_map                         31.5 Ki    disk4s1
       2:             Apple_Driver43                         28.0 Ki    disk4s2
       3:             Apple_Driver43                         28.0 Ki    disk4s3
       4:           Apple_Driver_ATA                         28.0 Ki    disk4s4
       5:           Apple_Driver_ATA                         28.0 Ki    disk4s5
       6:             Apple_FWDriver                         256.0 Ki   disk4s6
       7:         Apple_Driver_IOKit                         256.0 Ki   disk4s7
       8:              Apple_Patches                         256.0 Ki   disk4s8
       9:                  Apple_HFS 1TB Music Drive         931.4 Gi   disk4s10
    raymond-medinas-power-mac-g4-agp-graphics:~ raymondmedina$
    Terminal info on disk4s10.
    Last login: Mon Feb 25 22:22:41 on ttys000
    raymond-medinas-power-mac-g4-agp-graphics:~ raymondmedina$ diskutil info disk4s10
       Device Identifier:        disk4s10
       Device Node:              /dev/disk4s10
       Part Of Whole:            disk4
       Device / Media Name:      Apple_HFS_Untitled_1
       Volume Name:              1TB Music Drive
       Mount Point:             
       File System:              Journaled HFS+
       Owners:                   Disabled
       Partition Type:           Apple_HFS
       Bootable:                 Is bootable
       Media Type:               Generic
       Protocol:                 FireWire
       SMART Status:             Not Supported
       Volume UUID:              61A8EAFF-E1C9-3605-AF92-5A210E3C781A
       Total Size:               931.4 Gi (1000069726208 B) (1953261184 512-byte blocks)
       Free Space:               0.0 B (0 B) (0 512-byte blocks)
       Read Only:                No
       Ejectable:                Yes
       Whole:                    No
       Internal:                 No
    Disk Utility Info on 1TB Music Drive.
    Name :
    1TB Music Drive
    Type :
    Volume
    Disk Identifier :
    disk4s10
    Mount Point :
    Not mounted
    File System :
    Mac OS Extended (Journaled)
    Connection Bus :
    FireWire
    Device Tree :
    IODeviceTree:fwx/node@90a9c5c29aa50b/sbp-2@c000
    Writable :
    Yes
    Universal Unique Identifier :
    61A8EAFF-E1C9-3605-AF92-5A210E3C781A
    Capacity :
    931.4 GB (1,000,069,726,208 Bytes)
    Owners Enabled :
    No
    Can Turn Owners Off :
    Yes
    Can Be Formatted :
    Yes
    Bootable :
    Yes
    Supports Journaling :
    Yes
    Journaled :
    No
    Disk Number :
    4
    Partition Number :
    10
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