小伙伴肯定有在Linux安装过VirtualBox吧，是不是很难？大猪当初安装的时候也觉得挺难的，这里告诉大家是怎么样安装的。
VirtualBox支持以下系统
- Windows 3.x
- Windows NT 4.0
- Windows 2000
- Windows XP
- Windows Server 2003
- Windows Server 2008
- Windows Vista
- Windows 7
- Windows 8
- Windows 8.1
- Windows 10
- DOS
- Linux (2.4, 2.6, 3.0, 3.2, 3.4, 3.10, 3.16, 3.18, 4.1, 4.4, 4.7, 4.8, 4.9, 4.10, 4.11, 4.12)
- Solaris
- OpenSolaris
- OpenBSD
以下操作方法，怎样在Fedora 26/25/24/23/22, CentOS 7.4/6.9, Red Hat (RHEL) 7.4/6.9上安装VirtualBox 5.1 (当前版本 5.1.28)
1. 切换ROOT用户
su -
## 或者 ##
sudo -i
2. 安装Fedora或者RHEL仓库索引文件
cd /etc/yum.repos.d/
## Fedora 26/25/24/23/22/21/20/19/18/17/16 users
wget http://download.virtualbox.org/virtualbox/rpm/fedora/virtualbox.repo
## CentOS 7.4/6.9 跟 Red Hat (RHEL) 7.4/6.9 users
wget http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo
3. 更新包，更新内核
## Fedora 26/25/24/23/22 ##
dnf update
## Fedora 21/20/19/18/17/16 跟 CentOS/RHEL 7/6/5 ##
yum update
4. 检查内核是否成功更新
rpm -qa kernel |sort -V |tail -n 1
uname -r
5. 重启并选择更新后的内核版本
reboot
6. 安装依赖包
## CentOS 7 跟 RHEL 7 ##
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
## CentOS 6 跟 RHEL 6 ##
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
## CentOS 5 跟 RHEL 5 ##
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-5.noarch.rpm
## Fedora 26/25/24/23/22 ##
dnf install binutils gcc make patch libgomp glibc-headers glibc-devel kernel-headers kernel-devel dkms
## Fedora 21/20/19/18/17/16 and CentOS/RHEL 7/6/5 ##
yum install binutils gcc make patch libgomp glibc-headers glibc-devel kernel-headers kernel-devel dkms
## PAE kernel users install ##
## Fedora 24/23/22 ##
dnf install binutils gcc make patch libgomp glibc-headers glibc-devel kernel-headers kernel-PAE-devel dkms
## Fedora 21/20/19/18/17/16 and CentOS/RHEL 7/6/5 ##
yum install binutils gcc make patch libgomp glibc-headers glibc-devel kernel-headers kernel-PAE-devel dkms
7. 安装VirtualBox版本，最新 Version 5.1 (当前 5.1.28)
## Fedora 26/25/24/23/22 ##
dnf install VirtualBox-5.1
## Fedora 21/20/19/18/17/16/15/14 and CentOS/RHEL 7/6/5 ##
yum install VirtualBox-5.1
8. 重新编译内核模块
## Fedora 26/25/24/23/22/21/20/19 and CentOS/RHEL 7 ##
/usr/lib/virtualbox/vboxdrv.sh setup
## Fedora 18/17/16 and CentOS/RHEL 6/5 ##
/etc/init.d/vboxdrv setup
## 或者 ##
service vboxdrv setup
9. 添加用户到VirtualBox用户组
usermod -a -G vboxusers 用户名
启动VirtualBox
VirtualBox
10. 故障排除
如果有KERN_DIR参数有问题或你的内核目录没有自动检测到，请手动设置KERN_DIR环境变量，使用以下方法：
## 当前运行的内核是 Fedora ##
KERN_DIR=/usr/src/kernels/`uname -r`
## 当前运行的内核是 CentOS 跟 Red Hat (RHEL) ##
KERN_DIR=/usr/src/kernels/`uname -r`-`uname -m`
## 例如 Fedora ##
KERN_DIR=/usr/src/kernels/2.6.33.5-124.fc13.i686
## 例如 CentOS 跟 Red Hat (RHEL) ##
KERN_DIR=/usr/src/kernels/2.6.18-194.11.1.el5-x86_64
## 导出变量 KERN_DIR ##
export KERN_DIR
