installed from iso:CentOS-6.7-x86_64-minimal.iso,iso check sum ok. install ok. I use vm-byhve,the centos6.conf is : guest="centos" linux_kernel="2.6.32-573.el6.x86_64" cpu=1 memory=512M network0_type="virtio-net" network0_switch="public" disk0_type="virtio-blk" disk0_name="disk0.img" uuid="5d49e7b5-a07a-11e5-afa3-00cfe0306cb6" network0_mac="58:9c:fc:00:f4:c1" ~ boot.cmd: linux /vmlinuz-2.6.32-573.el6.x86_64 root=/dev/mapper/centos-root initrd /initramfs-2.6.32-573.el6.x86_64.img boot bhyve log: ec 12 10:58:37: initialising Dec 12 10:58:37: [guest: centos] Dec 12 10:58:37: [uefi: no] Dec 12 10:58:37: [cpu: 1] Dec 12 10:58:37: [memory: 512M] Dec 12 10:58:37: [hostbridge: standard] Dec 12 10:58:37: [com ports: com1] Dec 12 10:58:37: [uuid: 5d49e7b5-a07a-11e5-afa3-00cfe0306cb6] Dec 12 10:58:37: [utctime: no] Dec 12 10:58:37: [debug mode: no] Dec 12 10:58:37: [primary disk: disk0.img] Dec 12 10:58:37: [primary disk dev: file] Dec 12 10:58:37: initialising network device tap2 Dec 12 10:58:37: adding tap2 -> bridge0 (public) Dec 12 10:58:37: booting Dec 12 10:58:37: create file /data/vm/centos6/device.map Dec 12 10:58:37: -> (hd0) /data/vm/centos6/disk0.img Dec 12 10:58:37: create file /data/vm/centos6/boot.cmd Dec 12 10:58:37: -> linux /vmlinuz-2.6.32-573.el6.x86_64 root=/dev/mapper/centos-root Dec 12 10:58:37: -> initrd /initramfs-2.6.32-573.el6.x86_64.img Dec 12 10:58:37: -> boot Dec 12 10:58:37: grub-bhyve -r hd0,msdos1 -m /data/vm/centos6/device.map -M 512M centos6 < /data/vm/centos6/boot.cmd Dec 12 10:58:38: [bhyve options: -c 1 -m 512M -AHP -U 5d49e7b5-a07a-11e5-afa3-00cfe0306cb6] Dec 12 10:58:38: [bhyve devices: -s 0,hostbridge -s 31,lpc -s 4:0,virtio-blk,/data/vm/centos6/disk0.img -s 5:0,virtio-net,tap2,mac=58:9c:fc:00:f4:c1 -s 6:0,virtio-rnd] Dec 12 10:58:38: [bhyve console: -l com1,/dev/nmdm2A] Dec 12 10:58:38: starting bhyve Dec 12 11:01:27: bhyve exited with status 1 Dec 12 11:01:27: destroying network device tap2 Dec 12 11:01:27: stopped guest panic info: dracut: Scanning devices vda2 for LVM volume groups dracut: Reading all physical volumes. This may take a while... dracut: Found volume group "VolGroup" using metadata type lvm2 dracut: PARTIAL MODE. Incomplete logical volumes will be processed. dracut: 2 logical volume(s) in volume group "VolGroup" now active dracut Warning: No root device "block:/dev/mapper/centos-root" found dracut Warning: Boot has failed. To debug this issue add "rdshell" to the kernel command line. dracut Warning: Signal caught! dracut Warning: Boot has failed. To debug this issue add "rdshell" to the kernel command line. Kernel panic - not syncing: Attempted to kill init! Pid: 1, comm: init Not tainted 2.6.32-573.el6.x86_64 #1 Call Trace: [<ffffffff81537a84>] ? panic+0xa7/0x16f [<ffffffff8107cd17>] ? do_exit+0x867/0x870 [<ffffffff811935a5>] ? fput+0x25/0x30 [<ffffffff8107cd78>] ? do_group_exit+0x58/0xd0 [<ffffffff8107ce07>] ? sys_exit_group+0x17/0x20 [<ffffffff8100b0d2>] ? system_call_fastpath+0x16/0x1b