[WinNTSetup v5.4.1]

hi zomk777,

that interesting, someone else already report me that the "drive letter preassignment" option can assign 2 letter for a partition.

I could never reproduce this, but mountvol.exe should be able to removed the wrong drive letters.

The assignment of the system drive letter always works well for me.

One think that maybe help finding the problem:

- after winntsetup finished load the the offline system hive and save the MountedDevices key:

reg load HKLM\SYS C:\Windows\system32\config 
reg export HKLM\SYS\MountedDevices C:\MountedDevices_before_Reboot.reg
reg unload HKLM\SYS

reboot and let installation continue, after new windows has booted to desktop

export the new MountedDevices key

reg export HKLM\System\MountedDevices C:\MountedDevices_after_Setup.reg

please send me both reg files

Hi, thanks for your reply,but i am sorry that i had format my partition after i find the assignment error.so i can't give u my reg file

But i used another inst tool and everything goes well (I choose both Inst & boot drive as C),It is also based on Fujianabc's NT6 Fast Installer,but Its interface is Chinese...

hope you can find its code and get something useful.

http://www.mediafire.com/?6of8xdbm9lmusfb

[WinNTSetup v5.4.1]

I use it to install windows 7 from pe(XP based) and select both the boot drive and installation drive as C(first and primary partition of hdd)

OK everything goes well...

Then after installation finished,I go to "my computer" and I found my OS partition becomes the letter D ..... and it's unchangeable ...

I tried again with other option such as change the instdrive to D or mount installation drive as D,but still have some letter errors: in my computer there comes a virtual partition B,it is the same as C(now C is the OS partition)....