#What does map mean?
map in Chinese means drawing a map of...; understanding information and providing information (especially its arrangement or organization).
map in the computer command is used to virtualize the image file into a floppy disk.
One of GRUB's built-in commands: map, used to virtualize the image file into a floppy disk
Usage:
map ( hdx,y)/directory/file name (drive letter)
chainloader (hdx,y)/directory/file name
*Note: GRUB uses the UNIX method of naming devices. That is (hdx,y). x is the hard disk number and y is the drive letter. Start counting from zero. The first extended partition is numbered 4.
Startup command example (Mini-Windows 3.2 startup disk):
map (hd0,0)/boot/pmwin3.img (fd0) chainloader (hd0,0)/boot/pmwin3.img boot
Menu example
title Windows 3.2 简体中文版 map (hd0,0)/boot/pmwin3.img (fd0)
chainloader (hd0,0)/boot/pmwin3.img
MAP must require image files to be stored continuously, otherwise it cannot be started. It does not limit the file size.
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