有谁可以帮我解释一下这个DOS编程的具体命令作用啊？ - DOS开发编程 & 发展交流（开发室） - 中国DOS联盟论坛

以下是一个选择加载哪一种驱动程序的方式，请高手们帮我注释一下它们每条命令的作用可以吗？因为我只是一只菜鸟来的。。。

@ECHO OFF
goto start
:w_menu

UltraBoot Disk Startup Menu
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::

:t_menu

UltraBoot Disk Startup Menu
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1. CDROM Driver Only
2. CDROM and SCSI Device
3. Compact Mode
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4. Quit to DOS (ESC)
::

:start
set path=%ramdrv%\bin
set path=%path%;%ramdrv%\doscmd
mouse /u
cls

wbat text 2,2 @startup.bat:t_menu

wbat text 6,4 (+white on +blue) " 1. CDROM Driver Only "

wbat text 7,5 (+red on black) "2"
wbat text 8,5 (+red on black) "3"
wbat text 10,5 (+red on black) "4"

wbat cursor 12
func ? Time remaining:
func -w10>%temp%\tmp.bat
call %temp%\tmp.bat
del %temp%\tmp.bat

wbat text 12,1 " "

if "%?%"=="27" goto domenu4
if "%?%"=="13" goto domenu1

if "%?%"=="208" goto menu2
if "%?%"=="200" goto menu4

if "%?%"=="49" goto domenu1
if "%?%"=="50" goto domenu2
if "%?%"=="51" goto domenu3
if "%?%"=="52" goto domenu4

goto domenu1

:menu1
set ?=
call w.bat fix menu 1,1 (white on black) @startup.bat:w_menu #1
goto doit

:menu2
set ?=
call w.bat fix menu 1,1 (white on black) @startup.bat:w_menu #2
goto doit

:menu3
set ?=
call w.bat fix menu 1,1 (white on black) @startup.bat:w_menu #3
goto doit

:menu4
set ?=
call w.bat fix menu 1,1 (white on black) @startup.bat:w_menu #4
goto doit

:doit
cls
if "%?%"=="1" goto domenu1
if "%?%"=="2" goto domenu2
if "%?%"=="3" goto domenu3
if "%?%"=="4" goto domenu4
goto domenu4

:domenu1
cls
echo Extracting device driver(s)...
mkdir %ramdrv%\device
extract /y /l %ramdrv%\device /e a:\cdrom.cab >nul
device %ramdrv%\device\vide-cdd.sys /D:MSCD001

goto common

:domenu2

echo Extracting device driver(s)...
mkdir %ramdrv%\device
extract /y /l %ramdrv%\device /e a:\cdrom.cab >nul
extract /y /l %ramdrv%\device /e a:\scsi.cab >nul
device %ramdrv%\device\vide-cdd.sys /D:MSCD001
device %ramdrv%\device\btdosm.sys
device %ramdrv%\device\flashpt.sys
device %ramdrv%\device\btcdrom.sys /D:MSCD001
device %ramdrv%\device\aspi2dos.sys
device %ramdrv%\device\aspi8dos.sys
device %ramdrv%\device\aspi4dos.sys
device %ramdrv%\device\aspi8u2.sys
device %ramdrv%\device\aspicd.sys /D:MSCD001

goto common

:domenu3

echo Extracting device driver(s)...
mkdir %ramdrv%\device
extract /y /l %ramdrv%\device /e a:\cdrom.cab >nul
device %ramdrv%\device\vide-cdd.sys /D:MSCD001

cls
echo.
echo Preparing to start your computer.
echo This may take a few minutes. Please wait...
echo.

mkdir %ramdrv%\pdos
extract /y /l %ramdrv%\pdos /e a:\pdos.cab >nul
set path=%path%;%ramdrv%\pdos
copy %ramdrv%\pdos\pdos.def %ramdrv%\ >nul

mkdir %ramdrv%\vc
extract /y /l %ramdrv%\vc /e a:\vc.cab >nul
set path=%path%;%ramdrv%\vc

lh mscdex /D:MSCD001
lh smartdrv

goto end

:domenu4
cls
echo.
echo To see the menu again, type STARTUP and press ENTER.
echo.
set startup=4
goto end

:common
cls
echo.
echo Preparing to start your computer.
echo This may take a few minutes. Please wait...
echo.

mkdir %ramdrv%\pdos
extract /y /l %ramdrv%\pdos /e a:\pdos.cab >nul
set path=%path%;%ramdrv%\pdos
copy %ramdrv%\pdos\pdos.def %ramdrv%\ >nul

mkdir %ramdrv%\vc
extract /y /l %ramdrv%\vc /e a:\vc.cab >nul
set path=%path%;%ramdrv%\vc

mkdir %ramdrv%\tools
if exist a:\ghost.cab extract /y /l %ramdrv%\tools /e a:\ghost.cab >nul
if exist a:\pqmagic.cab extract /y /l %ramdrv%\tools /e a:\pqmagic.cab >nul
set path=%path%;%ramdrv%\tools

lh mscdex /D:MSCD001
lh smartdrv

echo.
echo The diagnostic tools were successfully loaded to drive Z:.
echo.

:end
echo To view Help, type HELP and then press ENTER.
echo.
%ramdrv%
lh mouse >nul
lh doskey >nul
set ?=
set wbat=

if "%startup%"=="4" goto eof
menu
:eof
set startup=