It seems that this computer is configured to boot via EFI, but maybe that configuration will not work for booting from the hard drive. Some EFI firmware implementations do not meet the EFI specification (i.e. they are buggy!) and do not support proper configuration of boot options from system hard drives.

A workaround for this problem is to install an extra copy of the EFI version of the GRUB boot loader to a fallback location, the "removable media path'. Almost all EFI systems, no matter how buggy, will boot GRUB that way.

Warning: If the installer failed to detect another operating system that is present on your computer that also depends on this fallback, installing GRUB there will make that operating sustem temporarily unbootable. GRUB can be manually configured later to boot it if necessary.

Force GRuB installation to the EFI removable media path?

当前这台计算机的配置貌似是通过 EFI 启动，但此配置可能无法使之从硬盘启动。有的 EFI 固件的实现方法未遵守 EFI 规范（有Bug！），从而不能设置为从硬盘启动。

一种解决方法是将 EFI 的 GRUB boot loader 副本安装到另一个位置，即 “可移除介质的路径” 。绝大多数的EFI系统，无论是否有Bug，都能以这种方式成功引导GRUB。

警告：如果当前计算机上已经存在着一个操作系统也是以上述解决方法启动的，而且本安装程序未能检测到，则继续按上述方案安装，会使该操作系统暂时无法启动。但是仍然可以重新配置 GRUB 成功引导。

是否强制将 GRUB 安装到 EFI “可移除介质的路径”？