Not sure what you are running, but here is a coupe things to try:

Does this display anything?
mdadm --detail --scan

Does this display any raid fs?
fdisk /dev/sdb
p



On Wed, Feb 17, 2010 at 1:28 PM, <joe@actionline.com> wrote:

> .
> There are two identical 300-gig hard disks on my computer;
> but only one is accessible. When I do 'df' I see only this:
>
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/sdb5             7.7G  3.5G  3.9G  48% /
> /dev/sdb7             138G  9.5G  129G   7% /home
>
> Hardware detection shows two hard disks: sda and sdb:
>
> #1 &#8206;ATA MAXTOR STM332062
> Old device file: &#8206;/dev/sda
> Partitions Primary partitions: &#8206;1 (sda1)
> Misc Geometry: &#8206;38913/255/63 (CHS)
> Disk controller: &#8206;0 -- Module: &#8206;sata_nv
>
> #2 &#8206;ATA MAXTOR STM332062
> Old device file: &#8206;/dev/sdb
> Partitions Primary partitions: &#8206;1 (sdb1)
> Extended partitions: &#8206;3 (sdb5, sdb6, sdb7)
> Misc Geometry: &#8206;38913/255/63 (CHS)
> Disk controller: &#8206;1 -- Module: &#8206;sata_nv
>
> When I tried to use 'gparted', I see this error:
>
> error: libhal_acquire_global_interface_lock:
> org.freedesktop.Hal.Device.InterfaceAlreadyLocked:
> The interface org.freedesktop.Hal.Device.Storage is already
> exclusively locked either by someone else or by yourself
>
> So, I booted "Part Magic" Linux live CD and screen captured
> the contents of the two hard disks as shown at these links:
>
> http://upquick.com/temp/gparted1.png
> http://upquick.com/temp/sda.sdb.png
>
> I want to use the second hard disk to backup all my files
> on the first hard disk.
>
> What do I need to do to get the second hard disk unlocked
> and mounted so I can copy all my files onto it?
>
>
>
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