Using Usb Device - Hitachi Compute Blade 2000 User Manual

Using USB device

LPAR manager changes LPARs to use a USB device, connecting the newly

assigned LPAR to the remote console for using the USB device.
You need to assign a USB device to an LPAR before activating the LPAR. LPARs,

to which the USB device is not assigned, cannot be selected as connection
destination for the USB device.
An LPAR to use a USB device must be activated. LPARs in deactivation or failure

cannot be selected to use the USB device. When an LPAR using the USB device
fails, another LPAR might not be assigned to the USB device.
Make sure to satisfy the following conditions before detaching a USB device.

OS is not booting or rebooting.

The USB device has been detached from the OS by performing the steps for

safely removing hardware for Windows, or unmounting the device for Linux
after the USB device is recognized by the firmware or OS.
Remote console is displayed without keeping the Alt, Windows, Ctrl, and Shift

keys pressed.
If you detach the USB device without satisfying conditions above, the following
events might occur.
Firmware or the OS behavior might become unstable, or the OS might hang up.

Data might be corrupted, or the display of the USB device might remain on the

OS.
Keyboard operation might not be properly executed.

If those events occur due to detaching the USB device, execute the following
operation.
For instability in firmware or OS behavior or OS hangup, attach the USB device.

If it does not recover the OS behavior, deactivate the LPAR and then activate
it again.
For the USB device that remains displayed on the OS, attach the USB device

and then detach it again.
For improper keyboard operation, any key might remain pressed on the OS. If

so, execute the following operation.
- For Windows, display the OS with the remote console, NETM/Remote
Control, or remote desktop in full screen, simultaneously press Alt,
Windows, Ctrl, and Shift keys.
- For Linux, display the OS with the remote console, press all Alt, Ctrl, and
Shift keys.
When a USB device is attached to an LPAR, usually an OS running on the LPAR

automatically recognizes the USB device. However, the USB device might not be
automatically recognized due to the state of the OS or when the USB device
might not have been completely detached. When the USB device cannot be
recognized after a while, detach the USB device and then connect it again. If it
does not work, unplug and then plug the USB cable, or uninstall the USB device
driver from the OS and then install it again.
With Linux, an error message appears when the USB device is detached. If the

USB is not mounted, there is no problem for data on the USB device and OS
behavior in the future.
If you use a USB port that differs from the one used at boot option registration, the

USB CD/DVD-ROM drive might not be recognized. If this happens, re-register the
boot option.
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