Host system: Ubuntu 9.04 x86_64 (NX/VT/PAE etc supported)
Guest: Centos 5.3 x86_64 netinstall media (cdrom iso)
The guest will not boot properly. isolinux runs and presents menus correctly, but the kernel hangs with the following lines displayed (with vbox utilizing 100% of a host CPU)
Kernel alive
kernel direct mapping tables up to 100000000 @ 8000-d000
The isolinux menu boots the kernel with only the initrd specified, no other parameters are passed (such as quiet)
I have attached a .tgz archive containing the machine's XML and a VBox.log
Quick summary of guest (and VM) settings:
OS Type: Linux 2.6 (64 bit)
Base Memory: 512 MB (of 4 GB)
Video Memory: 16 MB (of 512 MB)
Boot Order: CD/DVD-ROM, Hard Disk
ACPI: Enabled
IO APIC: Enabled
VT-X/AMD-V: Enabled (required for 64-bit guest. Supported by hardware)
Nested Paging: Enabled
PAE/NX: Enabled
3D Acceleration: Enabled
Hard Disks: One empty 10 GB image
CD-DVD: ISO (CentOS5-5.3-x86_64-netinstall.iso)
md5sum (binary mode): 7dec88e4147d6d90785ca57501af807e
obtain from: http://mirrors.usc.edu/pub/linux/distributions/centos/5.3/isos/x86_64/
Audio: ALSA (ICH AC97 mode)
Network: Intel PRO/1000MT Desktop (bridged mode)
USB fully enabled, no filters defined