Dear CentOS project's member I hope to decide the following problem with your knowledge. 1.I installed the CentOS6.2 into the DELL PC(https://www.dell.com/support/manuals/jp/ja/jpbsd1/latitude-e7440-ultrabook/late7440om-v3/specifications?guid=guid-247916a5-f1d3-44b2-82b7-f14374bb9a73&lang=en-us) with bootable usb created with CentOS-6.2-x86_64-minimal.iso. after that.I started the CentOS6.2.progress bar is ok. but like this message was displayed. --------------------------------------------------------------- [<ffffffff813452bd>] bus_probe_device+0x2d/0x50 [<ffffffff813437b7>] device_add+0x527/0x650 [<ffffffff8134c96b>] ? pm_runtime_init+0xcb/0xe0 [<ffffffff813438fe>] device_register+0x1e/0x30 [<ffffffffa00954ab>] register_virtio_device+0x7b/0xa0 [virtio] [<ffffffff81285ae0>] ? pci_request_selected_regions+0x10/0x20 [<ffffffffa00c0003>] virtio_pci_probe+0x17c/0x1c4 [virtio_pci] [<ffffffff81289aa7>] local_pci_probe+0x17/0x20 [<ffffffff8128ac91>] pci_device_probe+0x101/0x120 [<ffffffff81346492>] ? driver_sysfs_add+0x62/0x90 [<ffffffff81346630>] driver_probe_device+0xa0/0x2a0 [<ffffffff813468db>] __driver_attach+0xab/0xb0 [<ffffffff81346830>] ? __driver_attach+0x0/0xb0 [<ffffffff81345894>] bus_for_each_dev+0x64/0x90 [<ffffffff813463ce>] driver_attach+0x1e/0x20 [<ffffffff81345cd0>] bus_add_driver+0x200/0x300 [<ffffffff81346c06>] driver_register+0x76/0x140 [<ffffffff814f2525>] ? notifier_call_chain+0x55/0x80 [<ffffffff8128aef6>] __pci_register_driver+0x56/0xd0 [<ffffffff81096e75>] ? __blocking_notifier_call_chain+0x65/0x80 [<ffffffffa00c3000>] ? virtio_pci_init+0x0/0x20 [virtio_pci] [<ffffffffa00c301e>] virtio_pci_init+0x1e/0x20 [virtio_pci] [<ffffffff8100204c>] do_one_initcall+0x3c/0x1d0 [<ffffffff810af641>] sys_init_module+0xe1/0x250 [<ffffffff8100b0f2>] system_call_fastpath+0x16/0x1b --------------------------------------------------------------- <<Using machine structure>> BIOS Version=A05 memory installed=8192MB memory avaliavle=8106MB □Processor information Processor type=Intel(R)Core(TM)i7-4600UCPU at 2.10GHz core count=2 Processor ID=40651 Current Clock Speed=2.100GHz Mininum Clock Speed=800MHz Maxinum Clock Speed=3.700GHz Processor L2 cache=512KB Processor L3 cache=4.96.KB □Device Information Primary Hard Drive={none} MiniCard SSD Device=128GB HDD TW0TBURJ550553CC1419 Dock eSATA Device={none} Video Controller=Intel HD Graphics Video BIOS Version=2177v14 Video Memory=64MB What's happend? pleate tell me the why decided above problem. tanabe