HP storageworks DAT72 USB external tape drive and centos 4.2

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hi,

i've bought at HP storageworks DAT72 USB external tape 
drive and i'm trying to
make it work under centos 4.2

first the hard facts:

os - centos 4.2
kernel 2.4.9-22.0.2.EL
MB - MSI 8kn diamong
4gb ram

the problem is that i don't see the drive.

i'd expected that a device called st0 would appear but 
it's not the case.

watching the messages file when unplugging the device and 
the replugging it
is:

Jan 27 13:47:36 miraculix kernel: usb 1-8: new high speed 
USB device using
address 6
Jan 27 13:47:41 miraculix kernel: usb 1-8: control timeout 
on ep0in
Jan 27 13:47:42 miraculix kernel: usb 1-8: device not 
accepting address 6,
error -71
Jan 27 13:47:42 miraculix kernel: usb 1-8: new high speed 
USB device using
address 7
Jan 27 13:47:47 miraculix kernel: usb 1-8: control timeout 
on ep0in
Jan 27 13:47:48 miraculix kernel: usb 1-8: device not 
accepting address 7,
error -71
Jan 27 13:48:16 miraculix kernel: usb 1-7: new high speed 
USB device using
address 8
Jan 27 13:48:21 miraculix kernel: usb 1-7: control timeout 
on ep0in
Jan 27 13:48:22 miraculix kernel: usb 1-7: device not 
accepting address 8,
error -71
Jan 27 13:48:22 miraculix kernel: usb 1-7: new high speed 
USB device using
address 9
Jan 27 13:48:27 miraculix kernel: usb 1-7: control timeout 
on ep0in
Jan 27 13:48:28 miraculix kernel: usb 1-7: device not 
accepting address 9,
error -71
Jan 27 13:49:01 miraculix kernel: usb 1-1: new high speed 
USB device using
address 10
Jan 27 13:49:07 miraculix kernel: usb 1-1: control timeout 
on ep0in
Jan 27 13:49:07 miraculix kernel: usb 1-1: device not 
accepting address 10,
error -71
Jan 27 13:49:07 miraculix kernel: usb 1-1: new high speed 
USB device using
address 11
Jan 27 13:49:12 miraculix kernel: usb 1-1: control timeout 
on ep0in
Jan 27 13:49:13 miraculix kernel: usb 1-1: device not 
accepting address 11,
error -71


but i don't know what it means.

the documentation on the drives says the the two drivers 
usb_storage and st
should be loaded and the drive should work out of the box.


but it doesn't.

i'm loading both drivers after startup using this command:

modprobe usb_storage

and modbrobe st

what am i missing?????

any help appreciated.

br

kim gabrielsen

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