Hi, I am facing an issue which i have described in the below and looking forward your help regarding the same at the earliest. Description: I am trying to create virtualization using Xen-Hypervisor. I have installed fedora 8 and installed xen kernel as per the document guideless which are mentioned in the below. 1. Install Virtualization Software: su -c “yum groupinstall ‘Virtualization’” 2. ADDED STEP: su -c “yum install xen kernel-xen” 3. Check System – Administration – Services for xend 4. Check /boot/grub/grub.conf to ensure you have a xen boot option (my conf file has this option) title Fedora (2.6.21.7-3.fc8xen) root (hd0,0) kernel/xen.gz-2.6.21.7-3.fc8 module/vmlinuz-2.6.21.7-3.fc8xen ro root=/dev/VolGroup00/LogVol00 rhbg quiet module/initrd-2.6.21.7-3.fc8xen.img 5. Reboot the machine and select proper Xen kernel: I selected Fedora(2.6.21.7-3.fc8xen) 6. su -c “virt-manager” 7. Open a connection for “Xen” with “local” 8. Click on NEW Button 9. Enter System Name 10. Select Paravirtualized or Fully Virtualized Method 11. Locate Installation Meda ; I used http://mirror.stanford.edu/fedora/linux/releases/8/Fedora/i386/os 12. Storage Space – I used Simple File 13. Connect to Host Network 14. Allocate Memory and CPU 15. Load Virtual Machine I am facing two major issues while doing the above steps: 1. After the step 4 (while re-booting choosen the xen kenrnel mode), the ethernet interface is not coming up. make -c /lib/modules/2.6.21-2950.fc8xen/build SUBDIRS=/home/meru/Desktop/tg3-3.92n modules make : *** /lib/modules/2.6.21-2950.fc8xen/build: No such file or directory. Stop. I have used broadcom tg3 driver for fedora 8. But after booting with Xen Kernel mode, ethernet was not coming up, so i was trying to install same tg3 driver for Xen Kernel mode also. But it throws the above error. 2. While installing the OS on virtual machine, i am getting the following error "Unable to complete install: ''The CDROM device hdc is already used''". Find the attached error details file for this corressponding error message. I am trying this virtualization concept in the laptop ''Dell Latitude E5500'' Eagarly waiting for the reply on these issue from the xen discussion group. Regards, Krishnamoorthy.G The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/