I am writing bat files. I want my program to identify the letter of the USB flash drive which connected to the machine. Does anybody know how to do that?

Ooooh friends......, atleast tel me a way to identify the letters of all the drive partitions (with usb drive) in my machine.

Not to be a jerk but this isn't a vLite question so you shouldn't expect any replies. If you searched in the XP unattended forum (Vista is more XML) then you should have found your answer which will be something like...

set tagfile=something.txt

for %%i in (c d e f g h i j k l m n o p q r s t u v w x y z) do if exist "%%i:\%tagfile%" set keydrv=%%i

:angry:

Edited September 24, 200718 yr by kingprageeth

No any useful ideas?

Moving to unnatended forum.

Also isn't the USB drive letter commonly the first available free drive letter?

Are you running the BAT/CMD file from the USB drive so you need to know the letter the BAT is on?

I do this now with AutoIT. Does the drive have a specific file/folder structure on it? If so, this is REALLY easy, and I can write you the code (as I've already written it for my own USB key(s)).

GTOOOOOH, please tell me your method. That may be useful for me.

Hi,

Here is a .CMD file which lists all of your drives and lists their types. USB Drives appear as a "Removable Drive".

@echo off
setlocal ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION
set Drive_Count=0
set DrivesList=

for /f "skip=1 TOKENS=1*" %%i in ('fsutil fsinfo drives^|more') do (
set Drive=%%i
set /a Drive_Count+=1

for /F "tokens=1* delims=- " %%A in ('fsutil fsinfo drivetype !Drive!^|find "-"') do (
  echo Drive !Drive_Count!:	[!Drive:~0,1! ] %%B
  set MountPoint_Count=
  for /F "tokens=* delims=:" %%Z in ('Mountvol^|find "!Drive:~0,1!:\"') do (
   set MountPoint=%%Z
   if !MountPoint:~8! NEQ !Drive! (
	set /a Drive_Count+=1
	set /a MountPoint_Count+=1
	echo MountPoint !Drive_Count!:	[!MountPoint:~8,1!!MountPoint_Count!]  !MountPoint:~8!
	set MountPoint[!Drive:~0,1!]=MountPoint_Count
   )
  )
  set Drive[!Drive:~0,1!]=%%B	 !MountPoint_Count!
  set DrivesList=!DrivesList! !Drive:~0,1!!MountPoint_Count!
)
)
rem echo Drive[q] [%Drive[q]%]
echo dl: %DrivesList%
echo off
endlocal

This code could serve as the basis of what you might be looking for.

Regards

Simon

USB Drives appear as a "Removable Drive".

Actually this depends upon the drive. Most thumb drives will be removable, external hard drives are not normally.

GTOOOOOH, please tell me your method. That may be useful for me.

This should get you started.

$drive = DriveGetDrive( "all" )
If NOT @error Then
	For $i = 1 to $drive[0]
		If $drive[$i] = "a:" Or $drive[$i] = "b:" Or $drive[$i] = "c:" Then ContinueLoop
		If FileExists($drive[$i] & "\boot\boot.sdi") Then
			MsgBox(0,"",$drive[$i])
			Exit
		EndIf
	Next
EndIf

MsgBox(0,"","No drives found containing ..\boot\boot.sdi")
Exit

Here's a variant of GTOOOOOH's script culled from the AutoIt forums that I have been using for a long time to run applications from my flash key:

$usb = DriveGetDrive("REMOVABLE")
If Not @error Then
 ;MsgBox(4096, "", "Found " & $usb[0] & " drives");‹-- uncomment to verify/identify all available drives
	For $i = 1 To $usb[0]
		If DriveGetLabel($usb[$i]) = "COR_8GB" Then
			Global $MyKey = $usb[$i];‹== set flash key drive letter assignment
		EndIf
	Next
EndIf

The main difference is that instead of searching for a file on the key, the script searches for the key itself . . . by name. I named my key "COR_8GB." The drive letter assignment is the variable $MyKey, which can be used to run apps, like so:

RunWait( $MyKey & '\myapps\nero6\install.exe')

On a related note, here's a variant that I use to fire up WPI from a flash key named, of all things, "WPI:"

$usb = DriveGetDrive("REMOVABLE")
If Not @error Then
	For $i = 1 To $usb[0]
		If DriveGetLabel($usb[$i]) = "WPI" Then
			$MyKey = $usb[$i]
				RegWrite("HKEY_CURRENT_USER\Software\WPI", "ConfigFile", "REG_SZ", $drv & "/WPI/WPIScripts/config.js")
				RegWrite("HKEY_CURRENT_USER\Software\WPI", "OptionsFile", "REG_SZ", $drv & "/WPI/WPIScripts/useroptions.js")
				RegWrite("HKEY_CURRENT_USER\Software\WPI", "LogPath", "REG_SZ", $drv & "/WPI/INSTALL_LOG.txt")
				Run("mshta " & $MyKey & "\WPI\WPI.hta """)
		EndIf
	Next
EndIf

With a custom autorun.inf file, I can just plug in the drive, click OK, and run WPI. Works well.

Edited September 29, 200718 yr by blinkdt

Thanx everybody for helping me.(Specially to GTOOOOOH,blinkdt and PsiMoon314)