User's Manual

omdiag: Using the Diagnostic Service 29
omdiag chassis usbctrl
Use the omdiag chassis usbctrl command to test the USB controller(s).
The USB test performs the following test:
NOTE: The following test is available on systems running supported Microsoft Windows and Red Hat Enterprise
Linux (version 3) and later operating systems.
NOTE: On systems running supported Red Hat Enterprise Linux operating systems, connecting or removing a USB
device from the server while the diagnostics enumeration is in progress, may cause the system to hang.
• USB Node Detection Test — Scans the USB bus, enumerating all the USB devices connected to the
USB controller being tested. USB diagnostics enumerate the various kinds of USB controllers on the
system board. In addition to the on-board USB controllers, the package enumerates USB controller
cards inserted in the PCI slot and any other USB devices connected to the ports of these USB
controllers. This test examines hot plugged and unplugged devices from the tested USB controller.
omdiag storage
Use the omdiag storage commands to perform tests on your system’s storage components, such as the
CD drive, DVD drive, diskette drive, hard drive, tape drive, and SCSI or RAID controller.
omdiag storage -?
Use the omdiag storage -? command to see a list of all storage components on the system.
omdiag storage cddvd
Use the omdiag storage cddvd command to test CD and DVD drives.
The CD or DVD drive test runs several tests on a CD or DVD drive to make sure the drive is working
properly. This test determines how many CD or DVD drives are in your system and tests only those
drives that support the appropriate CD or DVD media. To run this test, you must have a data CD or
DVD (such as a program CD or DVD or your system's recovery CD or DVD) in the drive to be tested.
Standard music CDs are not suitable for testing.
NOTE: USB CD and DVD drives present at enumeration should not be disconnected at the time of testing if the USB
CD or DVD drive is being tested. A CD must be present in the CD drive being tested.
If there is no data CD or DVD present in the drive to be tested, you will see the following error message:
Media not present in the drive, or the device may have become
disconnected, or the cable may be bad. Make sure that the cable is
properly connected. Insert media in the drive and run the test again.