How to automatically install my win2000 to disk D:?

I want to install win98 on C and win2k on D without any
intervening.

i) When I used unattend.txt, win2000 will be automatically
installed to disk C.

ii) Then I changed the value of "AutoPartition" in section
[DATA] of unattend.txt to "0",

In win98 and win98 Dos mode,this change seemly did not
have any effects, win2k were still automatic installed to
C;
when I deleted all system on my hard disk,and used
win98 boot floppy disk to start the computer, and
used "winnt /u:unatend.txt /s:f:\i386",this time it
stopped and let me choose the partition.but this is not my
goal.

iii) Then i used "winnt /t" win2k still didn't go to D:

iv) Another problem: when I copied the folder "i386" in
the win2000 CD to my hard disk X and
run "winnt /s:X:\i386",setup program still let me insert
CD after reboot.

v) Then i dont know how to do.

My questions:
i) Who can tell me the relationship of test(dos) mode of
win2k setup and GUI mode?why the test(dos) mode didnt
exist when i install win2k directly from win2k CD? but it
would exist when I run 'winnt' from win98 dos mode?

ii) Who can tell me the real use of
parameter "AutoPartition"?the Microsoft's document doesnt
say very clearly.

iii)the parameter /t of winnt command?

iv) How to automatically install my win2000 to disk D:?

Thanks a lot.

This is my unattend.txt:

;SetupMgrTag
[Data]
AutoPartition=0
MsDosInitiated="0"
UnattendedInstall="Yes"

[Unattended]
UnattendMode=FullUnattended
OemSkipEula=Yes
OemPreinstall=Yes
TargetPath=\WINNT

[GuiUnattended]
AdminPassword=a
OEMSkipRegional=1
TimeZone=85
OemSkipWelcome=1

[UserData]
FullName=AA
OrgName=AAAA
ComputerName=AAAAAA

[TapiLocation]
AreaCode=000
LongDistanceAccess="9999"

[SetupMgr]
DistFolder=D:\win2000dist
DistShare=win2000dist

[Identification]
JoinWorkgroup=WORKGROUP

[Networking]
InstallDefaultComponents=Yes


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