:again
echo Please remove disk #1 and replace with disk #2
pause
if not exist a:disk.002 goto again
copy a:*.* /v
pkunzip -o *.zip
del *.zip
:try
echo Please remove disk #2 and replace with disk #3
pause
if not exist a:disk.003 goto try
copy a:*.* /v
pkunzip -o *.zip
del *.zip
del pkunzip.exe
type cvldemo.msg