You could go as far as to have a hard drive loaded up with your operating system of choice and set up for maintenance and troubleshooting situations and keep it in the spare caddy.
你可以将硬盘放置到备用的架子，然后使用一个硬盘去加载选择的操作系统，设置维护，排除故障。
2
The best way to start playing with EVMS is to find a spare hard drive and install it in your system.
开始使用EVMS的最佳方法是找一个空闲的硬盘，并将其安装到系统上。
3
You'll need 5gb spare space on your hard drive, an Ubuntu install ISO and Ubuntu Customisation Kit installed from your package manager.