USB-CDROM GRUB4DOS DOS Question - China DOS Union Forum - China DOS Union

I'm mass-producing a USB flash drive. I want to use grub4dos to boot the system. Booting by loading dos.img works normally. I thought .IO.SYS is the DOS entry point, so having grub4dos load IO.SYS should work.
So I put IO.SYS COMMAND.COM MSDOS.SYS into one directory, and then had grub4dos load IO.SYS. I wrote it like this:
title DOS
find --set-root /io.sys
chainloader /io.sys
It really can enter DOS. But then this prompt appears:
Type the name of the command Interpreter (e.g.,C:\windows\command.com)

Is the menu.lst syntax wrong? Or can it only boot from an img image... and not from scattered files`?

Floor1　dz880315	Posted 2009-09-09 22:46
新手上路　Posts 2　Credits 6
I'm mass-producing a USB flash drive. I want to use grub4dos to boot the system. Booting by loading dos.img works normally. I thought .IO.SYS is the DOS entry point, so having grub4dos load IO.SYS should work. So I put IO.SYS COMMAND.COM MSDOS.SYS into one directory, and then had grub4dos load IO.SYS. I wrote it like this: title DOS find --set-root /io.sys chainloader /io.sys It really can enter DOS. But then this prompt appears: Type the name of the command Interpreter (e.g.,C:\windows\command.com) Is the menu.lst syntax wrong? Or can it only boot from an img image... and not from scattered files`?

Floor2　fujianabc	Posted 2009-09-10 04:49
金牌会员　Posts 1,616　Credits 3,467
io.sys, command.com, and msdos.sys must be placed on a floppy or hard disk image, and cannot be put directly inside a CD, because DOS does not support direct non-emulation booting from a CD.

Floor3　dz880315	Posted 2009-09-14 07:03
新手上路　Posts 2　Credits 6
So that's how it is... Thanks. ：）