6

I am trying to write a batch script to detect a USB drive and, if it is plugged in, for example copy c:\test\big.txt to the USB drive, and looping to detect another flash drive.

tshepang
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user1433266
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4 Answers4

10
@echo off
for %%d in (D: E: F: G: H: I: etc...) do (
   if exist %%d\nul (
      echo USB at drive %%d connected
   )
)

EDIT: Below is the right way to do that:

@echo off
for /F "tokens=1*" %%a in ('fsutil fsinfo drives') do (
   for %%c in (%%b) do (
      for /F "tokens=3" %%d in ('fsutil fsinfo drivetype %%c') do (
         if %%d equ Removable (
            echo Drive %%c is Removable (USB^)
         )
      )
   )
)
Aacini
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    How do you know which one is a USB drive? – Eitan T Jun 03 '12 at 23:15
  • Another alternative is to use Microsoft's [DevCon](http://support.microsoft.com/kb/311272) utility. – Stephen Niedzielski Jun 12 '12 at 04:54
  • @StephenNiedzielski: I see no reason to download and use an additional application if the problem may be solved with the installed commands. On the other hand, I reviewed DevCon description at that link and I can't find the way to identify the USB drives. Could you show us an example of how to do that? Thanks! – Aacini Jun 13 '12 at 02:12
  • @Aacini I ran out of room for a comment, so I've posted below. – Stephen Niedzielski Jun 13 '12 at 07:10
  • Is there any way to do the second option without administrator privileges? – MD XF Sep 30 '16 at 19:42
3

I know this is old but....

@echo off

for /F "usebackq tokens=1,2,3,4 " %%i in (`wmic logicaldisk get caption^,description^,drivetype 2^>NUL`) do (

if %%l equ 2 (
copy c:\test\big.txt %%i
        )
        )

This is assuming of course both drives are inserted.

sparky3489
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1

The above code had a flaw which has been attended to in the following code The code works in XP and gives you the USB drive letters, if no usb device is connected , it tells you so !

:: SUCCESS @ 2:39 AM ON 12 OCT 2013 !!! :: IMPROVED BY BOBBY GOREJA

@echo off

set usbdrv=
set usb=No
:: Above two lines on 12 Oct 2013

fsutil fsinfo drives >de
type de | find "Drives:" /v >dlist

for /F "tokens=1" %%c in ('type dlist') do (

               for /F "tokens=3" %%d in ('fsutil fsinfo drivetype %%c') do (

               rem echo Token is %%d

             if %%d equ Removable (

            echo Drive %%c is Removable (USB^)

             set usbletter=%%c 
             set usb=Yes

            echo USB drive letter is %usbletter%

rem     set usbdrv = %%c   <<< this does NOT work!
 rem              echo USB1 drive letter is %usbdrv%

                                                                )
                                         )
                                    )
 del de
 del dlist

             echo  REPEAT:Device at %usbletter%

if  "%usb%"=="No" echo No USB Device Connected .
set usb=
bobby goreja
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0

@Aacini I don't have a good setup to this case today, so I instead tried finding my USB webcam. I used devmgmt.msc and devcon listclasses to figure out the membership a connected USB camera would have. After a few tests, I arrived at devcon find =Image USB\*. I figured it would be simple enough to do the same for a USB mass storage device, so I tried devcon find =Volume (per listclasses). Unfortunately, this dumps out a GUID which you would then have to map to a drive letter. A cursory glance at this overflow suggests you can do so from the registry using reg query, but it seems at this point that fsutil would be simplest for your case.

Community
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Stephen Niedzielski
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