Issue

• We have RHEL 5.9 virtual machine hosted in Microsoft Hyper-V 2012. The system was failing to boot with kernel panic error messages noted in knowledge base solution 480873 due to which the initrd image was rebuild with -preload option as per the steps in above solution.

• After rebuilding the initrd image, system is able to boot successfully but following error messages are observed on the console while booting up the system:

  Memory for crash kernel (0x0 to 0x0) not within permissible range
  WARNING calibrate_APIC_clock: the APIC timer calibrating may be wrong.
  Red Hat nash version 5.1.19.6 starting
  VMBUS: HvInit() ERROR! Unknown guest id (0x12345689898892)!!
  VMBUS: VmbusInitialize() ERROR!! Unable to initialize the hypervisor - 0xffffffff
  VMBUS_DRV: vmbus_bus_init() ERROR!! Unable to initialize vmbus (-1)
  insmod: error inserting '/lib/vmbus.ko': -1 Operation not permitted
  insmod: error inserting '/lib/blkvsc.ko': -1 Operation not permitted
  insmod: error inserting '/lib/storvsc.ko': -1 Operation not permitted
  insmod: error inserting '/lib/netvsc.ko': -1 Operation not permitted
            Welcome to Red Hat Enterprise Linux Server
            Press 'I' to enter interactive startup.
  Setting clock (utc): Fri Sep 20 06:40:40 CDT 2013
  Starting udev :                                            [  OK  ]