如何解决centos虚拟机无法启动

解决方法：

首先，Ctrl+Alt+F2进入命令行界面，用root用户登录，查看/etc/X11/xorg.conf文件是否存在，如果存在，则执行命令：

mv /etc/X11/xorg.conf /etc/X11/old_xorg.conf

重启系统，看是否正常。

然后Ctrl+Alt+F2进入命令行界面，用root用户登录，修改文件/etc/inittab

vim/etc/inittab

# inittab is only used by upstart for the default runlevel.
# ADDING OTHER CONFIGURATION HERE WILL HAVE NO EFFECT ON YOUR SYSTEM.
# System initialization is started by /etc/init/rcS.conf
# Individual runlevels are started by /etc/init/rc.conf
# Ctrl-Alt-Delete is handled by /etc/init/control-alt-delete.conf
# Terminal gettys are handled by /etc/init/tty.conf and /etc/init/serial.conf,
# with configuration in /etc/sysconfig/init.
# For information on how to write upstart event handlers, or how
# upstart works, see init(5), init(8), and initctl(8).     
# Default runlevel. The runlevels used are:
#   0 - halt (Do NOT set initdefault to this)
#   1 - Single user mode
#   2 - Multiuser, without NFS (The same as 3, if you do not have networking)
#   3 - Full multiuser mode
#   4 - unused
#   5 - X11
#   6 - reboot (Do NOT set initdefault to this)
#
id:5:initdefault:

将最后一行id:5:initdefault:修改为id:3:initdefault:则开机默认进入命令行界面。

重启进入命令行之后，执行startx，则可进系统图形界面了！

相关参考：centOS教程

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