Because most disk devices use a sector size of 512 bytes, the first-stage boot loader code must be very small.

由于大多数磁盘设备扇区大小为512字节，因此第一步引导加载程序代码都很小。

youdao

EFI includes its own boot loader, so you can boot from a GPT disk on an EFI-based system.

EFI包含自己的引导装载程序，因此您可以在一个基于EFI的系统上从一个GPT磁盘引导。

youdao

During the boot of the kernel, the initial-RAM disk (initrd) that was loaded into memory by the stage 2 boot loader is copied into RAM and mounted.

在内核引导过程中，初始ram磁盘(initrd)是由阶段2引导加载程序加载到内存中的，它会被复制到RAM中并挂载到系统上。

youdao