system halted after loading "hello.exe"

[rtems]

Thank you for your help.
Now I can get a bootable disk under your instructions,but i meet another problem. On some kind of computers i can boot rtems and see "hello world" messages, on some kind of compters i can't see these messages, after loading "hello.exe", it appears:
kernel=(fd0)/hello.exe
[NetBSD-a.out, loadaddr=0x100000, text=0x14bd0, C, data=0xd68, bss=0x4c78, entry=0x100000]
then system halted.
Did you meet this problem before? 
How to solve it ,please help me.

regards,
Rick

----- Original Message -----
From:"Robert Daniels" <robertd at vantageinc.com>
To:"'rtems'" <rtems at sina.com>
Subject:RE: how to boot hello.exe from floppy disk?
Date:Tue, 9 Jan 2001 24:18:02 +0800
 >I found some instructions on exactly how to do this in the
 >c/src/lib/libbsp/i386/pc386/HOWTO file.  I was able to get a bootable disk
 >to work from these instructions.  It involved using two disks to create one
 >bootable disk.
 >
 >Robert Daniels
 >robertd at vantageinc.com
 >
 > -----Original Message-----
 >From: 	rtems [mailto:rtems at sina.com]
 >Sent:	Tuesday, January 09, 2001 8:08 AM
 >To:	rtems-users at oarcorp.com
 >Subject:	how to boot hello.exe from floppy disk?
 >
 >CPU=i386 bsp=pc386
 >i have built "hello.exe" and use GRUB to boot it from my hard disk
 >successfully, but i can't boot it from one floppy disk.
 >i download GRUB-0.5.94 to generate stage1 and stage2, use "dd" copy it to
 >one floppy disk, but when i use "root (fd0)", it tell me "unknown file
 >system" ,so i can't copy "hello.exe" to this floppy disk, what should i do
 >next?
 >
 >thank you
 >
 >Rick
 >
 >
 >______________________________________
 >
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