求助！！！VMare 有回滚版本机制或者直接修改文件的功能么

[lmh566]

我因为要设置静态ip地址，所以去修改了70-persistent-net.rules文件

# This file maintains persistent names for network interfaces.# See udev(7) for syntax.## Entries are automatically added by the 75-persistent-net-generator.rules# file; however you are also free to add your own entries.
# PCI device 0x1022:0x2000 (pcnet32)SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:4b:63:df", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

=====================》》修改如下，注释了原有语句，只保留了NAME="eth0"

# This file maintains persistent names for network interfaces.# See udev(7) for syntax.## Entries are automatically added by the 75-persistent-net-generator.rules# file; however you are also free to add your own entries.
# PCI device 0x1022:0x2000 (pcnet32)SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:4b:63:df",
NAME="eth0
#ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
导致了开机不了，开机界面一直停留在一个黑色画面上，光标一直闪，安全模式也是如此！！！ 我是装在vmare的ubuntu 10.x版本，能返回之前修改前的版本或者直接修改那个文件么？因为是虚拟机 找不到相应的物理文件！！！虚拟机有什么插件可以解决这个问题么？？？