If you use an emergency disc, as described shortly, it may support different options than your regular installation does.
如果您使用一个紧急引导磁盘，比起常规安装它可能支持不同的选项，稍后将介绍。
2
Typically, you must boot an emergency disc much as you boot a Linux installation disc.
一般情况下，您必须引导一个紧急磁盘，就像您引导一个Linux安装磁盘那样。
3
Thanks to the installation of a number of fire curtains and the provision of an additional emergency exit, the listed foyer was retained in its original condition.