为什么在tornado2.2制作软盘启动盘会出现启动不成功

我用的CPU是pentiumII350,用的网卡是3COM的3C509B。我cpu 类型选PCPENTIUMII ,我在tornado2.2for x86下制作了软盘启动盘，但是在软盘启动时出现问题：  
NTLDR missing
press any key to restart

请问有没有人在tornado2.2下制作过软盘启动盘，可否给予小弟帮助。谢谢

We assume that Tornado 2.0 together with VxWorks 5.4 have been successfully installed on you Host PC. (Use Windows98 / Windows Me / Windows NT 4.0 / Windows 2000) And appropriate BSPs have been installed. (Ns486, pc386, pc486, pcPentium, pcPentiumPro, zt5541, zt5550, etc.)
Normally, we use Pentium BSP for our Pentium-Compatible PC targets.

Cautions: All BootDisk operations are use for Network Boot.

1. Make a BootDisk
1.1
BSP Directory:
Pentium BSP: $Tornado Root Dir$\\target\\config\\pcPentium
Zt-5541/5550 BSP: $Tornado Root Dir$\\target\\config\\ztBsp
Zt-5550 HA BSP: $Tornado Root Dir$\\target\\config\\ztBspHA

1.2
User custom define
We may do some custom defines for BSP, in most times we should custom our Network Card into
BSP for boot use network.
(Ne2000_ISA, Ne2000_PCI, Relteak_ ISA, Relteak_PCI, Accton_ISA, Accton_PCI) support for Chipsets En5025, Relteak8019, and Relteak8029 and NE Compatible Chipsets. Use VxWorks driver ENE.
(Intel Pro 100M PCI, Zt-5541) support for Chipsets Intel 82557. Use VxWorks driver FEI.
(Zt-5550) Use VxWorks driver DC.
In your BSP Directory, modify file “config.h”

For example:

1.2.1 ENE driver  (PC target mostly use ENE driver)
Boot Line modify:
#if (CPU == I80386)
#define DEFAULT_BOOT_LINE \\
\"fd=0,0(0,0)host:/fd0/vxWorks.st h=90.0.0.3 e=90.0.0.50 u=target\"
#elif (CPU == I80486)
#define DEFAULT_BOOT_LINE \\
\"fd=0,0(0,0)host:/fd0/vxWorks.st h=90.0.0.3 e=90.0.0.50 u=target\"
#elif (CPU_VARIANT == PENTIUM)
#define DEFAULT_BOOT_LINE \\
\"ene(0,0)host:vxworks h=172.16.168.175 e=172.16.168.169 u=user pw=user tn=MyDboard \"
#elif (CPU_VARIANT == PENTIUMPRO)
#define DEFAULT_BOOT_LINE \\
\"fd=0,0(0,0)host:/fd0/vxWorks.st h=90.0.0.3 e=90.0.0.50 u=target\"
#endif /* (CPU == I80386) */
Driver modify:
Undefine all other drivers, #undef INCLUDE_FEI  #undef INCLUDE_DC etc.
After /*Network driver options*/  &  /*verify network choices and dependencies*/. Add user Custom definition:
#define INCLUDE_END
#define INCLUDE_ENE_END
/* Misc. options */

1.2.2  FEI driver  (Some PC target use FEI driver)
Boot Line modify:
#if (CPU == I80386)
#define DEFAULT_BOOT_LINE \\
\"fd=0,0(0,0)host:/fd0/vxWorks.st h=90.0.0.3 e=90.0.0.50 u=target\"
#elif (CPU == I80486)
#define DEFAULT_BOOT_LINE \\
\"fd=0,0(0,0)host:/fd0/vxWorks.st h=90.0.0.3 e=90.0.0.50 u=target\"
#elif (CPU_VARIANT == PENTIUM)
#define DEFAULT_BOOT_LINE \\
\"fei (0,0)host:vxworks h=172.16.168.175 e=172.16.168.169 u=user pw=user tn=MyDboard \"
#elif (CPU_VARIANT == PENTIUMPRO)
#define DEFAULT_BOOT_LINE \\
\"fd=0,0(0,0)host:/fd0/vxWorks.st h=90.0.0.3 e=90.0.0.50 u=target\"
#endif /* (CPU == I80386) */

Driver modify:
Undefine all other drivers, #undef INCLUDE_ENE #undef INCLUDE_DC etc.
After /*Network driver options*/  &  /*verify network choices and dependencies*/. Add user Custom definition:
#define INCLUDE_FEI
#define INCLUDE_FEI_END
/* Misc. options */

1.2.3 Interrupt and I/O
Although most ISA card use int 5 and I/O port 0x300, some PCI cards and some ISA PNP cards use different interrupt and I/O port. You should first check the Network Cards’ interrupt and I/O port under Dos/Windows, and then modify them in config file “config.h”.
For Example:
Find and redefine follow clause:
#define IO_ADRS_ENE 0xe400
#define INT_LVL_ENE 0x0b
/* Hardware jumper is used to set */
/* RJ45(Twisted Pair) AUI(Thick) BNC(Thin) */
This example is only used for ENE driver.

After Modify the BSP configure file, now we can Build a Boot Rom for boot disk.

1.3 Build Boot ROM
Tornado IDE menu---->Build---->Build Boot Rom
 

1.4 Make Boot Disk
After build, we get a file bootrom_uncmp in BSP directory.
Copy this file to Host Bin directory. $Tornado Root Dir$\\host\\x86-win32\\bin,
Command : mkboot a: bootrom_uncmp
Thus a boot disk is made, it has VxWorks boot sector and bootrom.sys for boot.

我也遇到类似的问题，2.2制作的启动盘，只显示了几行+，就再也不动了，这是为什么？请高手指点