DISKPART in WinPE not working

[SiMonsterrr]

Hello everybody

First time using AutoIT for me, so please have mercy
I am using AHK in my WinPE environment and I want to accomplish the following:

I have one disk drive with 2 partitions:
Partition 1 - C 
Partition 2 - D

Now Partition 1 is my UEFI Partition and I want to change the drive letters, that Partition 2 (my Windows partition) uses the drive letter C.
I do this as following:

FileInstall("diskpart\diskpart.txt", @TempDir & "\diskpart.txt", 1) 
SplashTextOn("Windows 10 Migration Tool", "Systemdir is " & @SystemDir & "diskpart.exe", 800, 80, -1, 20)
RunWait("diskpart.exe /s " & @TempDir & "\diskpart.txt") 

This is my diskpart.txt:

sel disk 0
sel par 1
assign letter=f
sel par 2
assign letter=c
exit

diskpart.txt gets copied to the correct location, but the execution somehow doesn't work. If I look at the disk afterwards, everything's still the same. 
If I open up a CMD and execute "diskpart.exe /s X:\Windows\Temp\diskpart.txt", everything works perfectly. Also, the variables @TempDir has the correct value. 
What am I doing wrong?

[gillesg]

Add the full path to diskpart.exe

 

[iamtheky]

whats the command window say if you ("cmd /k diskpart.exe /s ....)?

[SiMonsterrr]

Just now, gillesg said:

Add the full path to diskpart.exe

 

I tried before with 

RunWait(@SystemDir & "\diskpart.exe /s " & @TempDir & "\diskpart.txt") 

it didn't make a difference.

[gillesg]

I tested it on my side.

to see what happens use @ComSpec & " /k " & @Systemdir

RunWait(@ComSpec & " /k " & @SystemDir &"\diskpart.exe /s " & "d:\users\gigros\Downloads\dkpart.txt" )

 

[iamtheky]

i am going to be mildly amused if you get a response from the OP, seeing as he is now sandwiched by the recommendation. 

specualtion:  I imagine it revealed the issue 3 days ago and is fixed. new members rarely feel the need to wrap the thread up in a pretty bow to allow others to learn as well. A common false belief among people new to the forum is that a (novice/syntax/new language) problem would display weakness rather than growth. 

 

Edited April 1, 2018 by iamtheky
clarity