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An Error Message Is Displayed When the OS Boots from the Virtual BMC DVD-ROM Drive

Publication Date:  2015-06-24 Views:  258 Downloads:  0

Issue Description

Hardware configuration:
An RH2285 configured with 12 hard disks
A LSISAS1068E controller card


The RH2285 baseboard management controller (BMC) mounts the ISO file through the virtual DVD-ROM drive to install an operating system (OS). An error message is displayed when the OS boots from the virtual DVD-ROM drive, as shown in Figure 1.

Figure 1 Error message displayed in the virtual DVD-ROM drive window

Handling Process

1.  Determine that the OS cannot boot from the virtual DVD-ROM drive according to the displayed message "Loading stage2 Read error 0x20". Replace the ISO image file. This problem persists.

2.  Assume that the problem occurs on server A. Use server B to install the image file. The problem does not occur. Therefore, the ISO file is not the cause.

3.  Remove and insert the network cable that connects to the BMC network port on server A. This problem persists.

4.  Use the network cable on server B to replace the network cable on server A. This problem is resolved.

Root Cause

The faulty network cable causes the failure in OS booting from the virtual DVD-ROM drive.


Replace the network cable.


Check whether the ISO file can be used properly. If yes, locate faults in the BMC network.